delivered the Opinion of the Court.
The plaintiff, L.C., brought this action in the District Court of the First Judicial District, Lewis and Clark County, to recover damages from the State of Montana as a consequence of her confinement and treatment in the Montana State Hospital at Warm Springs. Here, she appeals an order granting partial summary judgment to the State for all acts or omissions before July 1, 1973. We affirm.
The issues are:
1. Did the District Court err in ruling that the State’s purchase of insurance for a later time period did not waive sovereign immunity for torts occurring prior to 1973?
2. Did the court err in ruling that the statutory bond requirements for state employees do not waive sovereign immunity?
3. Did the court err in holding that the daily operation of Montana State Hospital at Warm Springs was not a proprietary function which would preempt the defense of sovereign immunity?
*84The State moves to strike references in L.C.’s recitation of the facts to a deposition of Dr. Harr. That deposition is not in the record on appeal. This Court frowns upon references in briefs to matters not in the record. Such matters will not be considered by the Court. Garza v. Peppard (1986), 222 Mont. 244, 248, 722 P.2d 610, 612-13. The statements attributed to Dr. Harr have not been considered in reaching this Opinion.
L.C. was placed in the state mental institution, Montana State Hospital at Warm Springs, in 1963 at the age of thirteen. Except for brief periods, she remained there until 1975. In 1986, through her guardian ad litem, she filed this suit, alleging that she became seriously mentally ill as a result of being confined in the Montana State Hospital. Her complaint includes claims of false imprisonment; cruel and inhumane punishment; denial of freedom, due process, education and equal protection; outrageous conduct; negligence; and negligent supervision.
In March 1987, the District Court granted the State’s motion to dismiss this action, ruling that the statute of limitations had run before the complaint was filed. Concluding that L.C.’s double disability of minority and mental illness had tolled the statute of limitations, this Court reversed the lower court’s ruling and remanded the case for further proceedings. Murphy for L.C. v. State (1987), 229 Mont. 342, 748 P.2d 907.
On remand, the State moved for partial summary judgment that sovereign immunity bars recovery for any of its acts before July 1, 1973. After briefing and oral argument, the court entered an order granting that motion. L.C. obtained certification of the order under Rule 54(b), M.R.Civ.P, and appeals.
I
Did the District Court err in ruling that the State’s purchase of insurance for a later time period did not waive sovereign immunity for torts occurring prior to 1973?
L.C. argues that an insurance policy purchased to cover the State for personal injury and other claims for the period from July 1,1973, through July 1,1976, relates back to her claims because some of her damages were manifested during that period. The District Court noted that under § 1-2-109, MCA, no law is retroactive unless expressly so declared and that prior to July 1, 1973, the State could not be sued for injury caused by its actions or those of its officers. Under the *851889 Montana Constitution, the State had sovereign immunity. The court found no indication in legislative history of an attempt to extend a waiver of sovereign immunity to pre-1973 torts committed by the State. Further, it reviewed federal case law and concluded that because L.C.’s injury manifested itself prior to the insurance policy period, the insurance policy does not cover the injury.
After the District Court made its ruling, this Court issued its opinion in Crowell v. School Dist. No. 7 (Mont. 1991), [247 Mont. 38,] 805 P.2d 522, 48 St.Rep. 81, [10 Ed Law 8]. In Crowell, the Court held that the purchase of insurance may waive sovereign immunity to the extent of the insurance coverage. Therefore, we must examine the terms of the insurance policy.
L.C. maintains that her claims fall under coverage “E,” personal injury Lability, of the State’s insurance policy. She argues that the policy contains no time limitation on when an injury under coverage “E” occurred.
Coverage “E” applies to damages for false arrest, detention, imprisonment, malicious prosecution, libel or slander, publication or utterance in violation of an individual’s right of privacy, and wrongful entry or eviction or other invasion of the right of private occupancy. It provides that “damages” means “only those damages which are payable because of personal injury arising out of an offense to which this insurance applies.” The insurance policy provides at endorsement #1 that
“(b)... the total liability of the company for all damages because of all... personal injury and other damages to which this policy applies which occur during each annual period while this policy is in force commencing from its effective date shall not exceed the limit of liability stated in the Schedule of this endorsement ...” [Emphasis supplied.]
Endorsement #1 clearly encompasses personal injury under coverage “E” and limits damages to those which occur “during each annual period while this policy is in force commencing from its effective date.”
L.C. also argues that, under the insurance policy’s definition of “occurrence,” her claim constitutes one “occurrence” lasting from her initial hospitalization in 1963 to her eventual release in 1975. The policy language upon which she relies appears in endorsement #1:
“(c) For the purpose of determining the limit of the company’s liability, all... personal injury, and other damages to which this policy applies arising out of continuous or repeated exposure to *86substantially the same general conditions shall be considered as arising out of one occurrence.”
The policy defines “occurrence” as:
“an event, or a continuous or repeated exposure to conditions, which results in bodily injury or property damage during the policy period that is neither knowingly nor intentionally caused by or at the direction of the insured.”
L.C. argues that all of her damages arise from one “occurrence” which is covered under the policy.
In interpreting the term “occurrence” in insurance policies, courts have developed several theories of exception to the basic principle that an insurance policy provides coverage only for incidents occurring during the policy period. These theories were developed in cases involving delayed manifestation of injury, as in exposure to asbestos. Coverage has been allowed if the act causing the injury occurred during the policy period or if the injury initially manifested itself during the policy period. See Hancock Laboratories, Inc. v. Admiral Ins. (9th Cir. 1985), 777 F.2d 520.
In this case, neither the State’s acts or omissions prior to July 1, 1973, nor the initial manifestation of the injury occurred during the policy period. Because L.C. alleges that she became seriously mentally ill by February of 1964, she admits that her injury manifested itself prior to the policy period.
L.C. cites Truck Ins. Exchange v. Woldstad (1984), 212 Mont. 418, 687 P.2d 1022, as authority that damages need not occur while the insurance policy is in force. In that case, Woldstad died from injuries received after the expiration of the insurance policy provided by Truck Insurance Exchange. This Court held that, nevertheless, there was coverage under the policy. But that insurance policy contained language not found in the State’s policy here. Specifically, coverage was provided for “bodily injury, sickness or disease, including death at anytime resulting therefrom, sustained by any person.” Woldstad, 687 P.2d at 1024.
We conclude that claims arising from pre-1973 acts or omissions by the State are not covered under the terms of this insurance policy. We hold that the District Court was correct in ruling that the State did not waive sovereign immunity for the period prior to 1973 by its purchase of the insurance policy for the period from July 1, 1973, through July 1, 1976.
*87II
Did the court err in ruling that the statutory bond requirements for state employees do not waive sovereign immunity?
Sections 6-101 to 6-104, R.C.M. (1947), repealed in 1965 and replaced by §§ 6-105 to 6-108, R.C.M. (1947), mandated that surety bonds be purchased for state officers and employees. L.C. argues that under Longpre v. Joint School District No. 2 (1968), 151 Mont. 345, 443 P.2d 1, these mandatory bonding requirements waive the defense of sovereign immunity.
In Longpre, this Court held that a statute requiring school districts operating their own buses to carry automobile bodily injury and liability insurance constituted a waiver of the school districts’ immunity from suit, to the extent of the insurance coverage. In this case, the District Court concluded that application of the rule set forth in Longpre would only protect from the mishandling of state funds and does not constitute a complete waiver of sovereign immunity. The court stated that there is nothing in the bonding statutes which implies a legislative intent to waive immunity for torts committed by a bonded state officer or employee. We agree. The statutes are aimed at protection from mishandling of state funds. “The amount for which a state officer or employee shall be bonded shall be based on the amount of money or property handled and the opportunity for defalcation.” Section 6-106, R.C.M. (1947).
L.C. also argues that the State’s immunity was waived under the Civil Rights Act of 1964, codified at 42 U.S.C. §§ 2000d to 2000d-4. The terms of the Act became applicable to the Montana State Hospital at Warm Springs in 1965 when the hospital became part of the Division of Mental Hygiene of the Department of Institutions. Although L.C. raised this argument before the District Court, that court did not address the argument.
The federal courts have recognized that remedies available under the Act do not include monetary damages. Drayden v. Needville Independent School Dist. (5th Cir. 1981), 642 F.2d 129, 133; but see Rhodes v. Charter Hosp. (S.D. Miss. 1989), 730 F.Supp. 1383, as to recovery of back pay. Moreover, the Act is addressed to discrimination on grounds of race, color, or national origin, none of which have been claimed here. We conclude that this argument has no merit.
Because the bond purchased by the State is not included in the record, the issue of whether the terms of that bond waived immunity *88in this instance is not before us. We hold that the District Court did not err in concluding that the bonding statutes do not waive immunity for the tort and constitutional claims raised here.
Ill
Did the court err in holding that the daily operation of Montana State Hospital at Warm Springs was not a proprietary function which would preempt the defense of sovereign immunity?
L.C. asserts that the daily operation of a state mental hospital is a proprietary function -under which the defense of sovereign immunity is not allowed. She cites Jacoby v. Chouteau County (1941), 112 Mont. 70, 112 P.2d 1068.
Jacoby involved an accident on a county-operated ferry which crossed the Missouri River. The case stands for the general proposition that governmental units are liable for negligence in the exercise of proprietary functions. Here, the District Court concluded that because the establishment of the state institution for the insane was constitutionally mandated in Article X, Section 1 of the 1889 Montana Constitution, and was not discretionary, its operation was a governmental and not a proprietary function.
That operation of a hospital by a unit of government is required and not merely permitted indicates that the activity is a governmental rather than a proprietary function. See, Annotation, “Immunity from liability for damages in tort of state or governmental unit or agency in operating hospital,” 25 ALR 2d 203, 223 (1952). Another consideration is whether the hospital is operated for profit, an indication of a proprietary function, or as a charity, an indication of a governmental function. Annotation, 25 ALR 2d at 219. The Montana State Hospital at Warm Springs is not run as a profit-making venture.
We hold that the District Court did not err in ruling that the constitutionally mandated state mental hospital was a governmental function under the shield of sovereign immunity prior to 1973.
Affirmed.
JUSTICES HARRISON, GRAY, McDONOUGH and WEBER concur.