The appellant was, plaintiff in the court below and brought suit against appellee for damages for the alleged breach of a contract. The appellee in due time and form presented his plea of privilege. Appellant filed a controverting affidavit, .seeking to sustain the venue of the suit in Dallas county, under subdivision 5, art. 1995, R. S. 1925, prescribing venue in civil cases. The subdivision is the .same as .subdivision 5 of the previous codification, and authorizes a suit to be maintained in a particular county, if the defendant has contracted in writing to perform an obligation in such county. Upon a hearing of the issue thus joined, the trial ^eourt sustained the plea of privilege, from which order this appeal is prosecuted.
The material facts shown by the record, in substance, are: That by an exchange of telegrams sent by the respective parties from April 10, 1925, to April 13, 1925, the appellee sold to appellant 20 carloads of hay to be delivered to Texas common points, by which it was contemplated that the appellee would deliver the hay to any point in Texas designated by appellant which was east of a line running north and south from Amarillo through Big Spring and Devine, Tex.
The purchase by appellant was confirmed by it by a letter dated April 13th, but the confirmation stated the number of cars as 15. On April 15th appellee replied to this letter, calling the appellant’s attention to the fact that 20 cars had been sold,‘instead of 15, and informing appellant that 5 cars *200had been shipped previously thereto, and ashing for shipping instructions for the remainder of cars by wire immediately. Upon receipt of this- letter, and on April 17, 1925, appellant wired instructions to appellee to ship all hay .to Dallas. For the 5 cars shipped by appellee, drafts were drawn with bill of lading for the cars attached.
As will be readily noticed, the sole question arising under the facts stated is whether the respective telegrams and letters created an obligation on the part of the appellee to perform any part of the contract in Dallas county. The appellant asserts that the evidence showed an obligation to deliver the hay in Dallas county. Appellee’s position is that no such obligation was created, for that the contract was complete upon the exchange of telegrams; that the letters of confirmation and shipping instructions thereafter given are no part of the '.contract; and that the contract as made by the original exchange of telegrams does not fix performance in a particular county as required by the statute adverted to. The appellant relies upon the decisions by the Supreme Court such as Scott & Mayhall v. Lubbock Grain & Coal Co., 113 Tex. 127, 252 S. W. 164; Patterson v. Smith Bros. Grain Co., 113 Tex. 147, 252 S. W. 1058; Turner v. Riverside Cotton Oil Co., 113 Tex. 143, 252 S. W. 1060. And the case of Heid Bros, v. Smith-James Grain Co. (Tex. Civ. App.) 267 S. W. 1044, and Ross-Carter Grain Co. S. W. 239. These decisions approve the rule as applied in Seley v. Williams, 20 Tex. Civ. App. 405, 50 S. W. 399, and other authorities following that case cited in Scott & Mayhall v. Lubbock Grain & Coal Co., supra. The facts in these cases are not parallel but the decisions furnish, it appears, a direct analogy to the ease at bar.
The appellee -insists, however, that the letters of confirmation with shipping instructions noted cannot be considered under the rule declared in Sugarland Industries v. Universal Mills (Tex. Civ. App.) 275 S. W. 406, and the authorities there cited. If the letters of confirmation, together with shipping instructions, bound appellee to deliver the hay at Dallas, T.ex., under the ap-pellee’s previous written agreement to deliver the hay to any point known as Texas common points, which included Dallas, then under the rule announced in the authorities cited above, a contract was made by the ap-pellee to deliver the hay in Dallas, and the case would evidently come within subdivision 5 of our venue statute.
The rule relied upon by appellee is that letters of confirmation which were not stipulated for or contemplated by the original agreement, made after the contract is concluded, and particularly after it has been partially performed, which place an additional burden upon the party sought to be charged,. not included in the original contract are no part thereof, unless supported by an additional consideration. But it is not believed that the letters of confirmation and shipping instructions in this case come within this rule. The original contract,' as evidenced' by the telegrams, plainly and certainly contemplated that there would be added as a part thereof subsequent shipping instructions, and that, upon receipt of such instructions, the delivery of the hay would .be made to the destination selected by appellant, and that until such shipping instructions were received the contract was not complete. Seley v. Williams, supra. We have therefore concluded that the shipping instructions are to be regarded as a part of the contract, and that the evidence detailed above, when considered together, shows a contract performable in Dallas county.
Appellant’s case as to venue was made out by the introduction of the messages and letters above referred to. These were identified by the testimony of an agent of appellant. Appellee insists that the action of the trial court in changing the venue should be upheld upon the theory that the trial court discredited the testimony of appellant as to the sending of the telegram instructing shipment of the hay to be made to Dallas. This contention is based on the general rule that the trial court is not bound by the uncorroborated testimony of an interested witness, and may render judgment contrary to such testimony although uncdntradieted.
We cannot adopt this view. While we understand the rule to be that upon the hearing of a plea of privilege, it devolves upon the plaintiff to clearly prove his right to maintain the suit in the county where it is brought, but this at most only requires proof of a state of facts which probably establishes a case cognizable in the county of the forum. First National Bank v. Childs (Tex. Civ. App.) 231 S. W. 807; J. G. Smith Grain Co. v. Shuler (Tex. Civ. App.) 249 S. W. 524; Richardson v. Cage, 113 Tex. 152, 252 S. W. 747.
All the testimony of appellant is liable to the attack noted. As stated, all the written communications relied on to establish a contract between the parties were only identified by the uncorroborated testimony of appellant’s agent. It could be plausibly argued that, by Sustaining the plea, the court found that there had never been any sort of negotiations between the parties. We are unwilling to carry the rule announced to such an extremity. Appellee introduced no testimony, but rested its plea on the record as made by appellant. We believe that, under the authorities noted above, appellant made out a prima facie case, fixing the venue in Dallas county. And this was all that was required.
■Believing that the evidence introduced, and which was evidently considered by the court, established a contract in writing on *201the part of the appellee to deliver the hay in. Dallas county, it necessarily follows that the judgment of the trial court should be reversed and remanded, with instructions to proceed to final trial and disposition of the ease in the trial court. ■