Mr. SPECTER. Would you now describe what is shown on the photograph? Mr. GAUTHIER. Commission Exhibit No. 879 is a view of the scale model looking toward the southwest, in the direction of the Triple Underpass, from a position on the sixth floor in the southeast corner window. Mr. SPECTER. I now hand you two additional photographs marked as Commission Exhibits Nos. 880 and 881, and ask you to state what they represent. (The documents referred to were marked Commission Exhibits Nos. 880 and 881 for identification.) Mr. GAUTHIER. Commission Exhibit No. 880 is a scale dimension view of the sixth floor looking toward the southeast corner of the Texas School Book Depository Building. Mr. SPECTER. And in the corner of that photograph is the area depicted which has been described as the possible site of the rifleman? Mr. GAUTHIER. That is correct. Mr. SPECTER. Will you now describe what Exhibit No. 881 shows? Mr. GAUTHIER. Commission Exhibit No. 881 is a three-dimensional view of leading down from Main Street and Commerce Street. Positioned on the ramps are scale models of an armored van and two police squad cars. There are also miniature mockups of individuals--representing position of people in this area of the basement garage. Mr. SPECTER. And what event is depicted in that model, if any? Mr. GAUTHIER. This represents the arrangement, physical arrangement, in the basement at the time Lee Harvey Oswald walked out from the elevator through the jail office onto the basement ramp. Mr. SPECTER. And where have these models been maintained since the time they were prepared by the FBI? Mr. GAUTHIER. The models were delivered to the Commission's building and installed in the exhibits room on the first floor, on January 20, 1964. Mr. SPECTER. Mr. Chief Justice, I now move for the admission into evidence of the photographs 878, 879, 880, and 881. The CHAIRMAN. They may be admitted. (The documents heretofore marked for identification as Commission Exhibits Nos. 878, 879, 880, and 881, were received in evidence.) Mr. SPECTER. Did you participate in the onsite tests made in Dallas? Mr. GAUTHIER. I did. Mr. SPECTER. Was a survey made of the scene used to record some of the results of that onsite testing? Mr. GAUTHIER. Yes. Mr. SPECTER. And by whom was the survey made? Mr. GAUTHIER. The survey was made on May 24, 1964, by Robert H. West, county surveyor, a licensed State land surveyor, located at 160 County Courthouse, Dallas, Tex. Mr. SPECTER. Have you brought the tracing of that survey with you today? Mr. GAUTHIER. I have; yes. Mr. SPECTER. And have you brought a cardboard reproduction of that? Mr. GAUTHIER. A copy made from the tracing; yes. Mr. SPECTER. Would you produce the cardboard copy made from the tracing for the inspection of the Commission at this time, please? Mr. GAUTHIER. Yes. Mr. SPECTER. Would you produce the tracing at this time, please? Mr. GAUTHIER. Yes; the tracing is wrapped, and sealed in this container.