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1923 Dr. V. K. Zworykin, now Associate Research Director of RCA Laboratories, applied for patent on the Iconoscope, television's elec- tronic "eye." (December- 29.1 192S Dr. V. K. Zworykin demonstrated an all- electronic television receiver using the Kine- scope, or picture tube, which he developed. (Novembei- IS.) 1930 Television on 6 x 8-foot screen was shown by RCA at RKO-Proctor's 58th Street Thea- ter, New York. {January 16.) NBC began operating W2XBS, pioneer ex- perimental television station in New York. (Juhj 30.) 1931 Empire State Building, world's loftiest sky- scraper, was selected as site for RCA-NBC television transmitter. 1932 RCA-initiated field tests with 120-line, all- electronic television. (Maij 25.) 1936 Television outdoor pickups demonstrated by RCA at Camden, N. J., on 6-meter wave across distance of a mile, i April 24.) 1937 RCA announced development of electron projection "gun" making possible television pictures on 8 x 10-foot screen. (May 12.) Mobile television vans operated by RCA- NBC appeared on New York Streets for first time. (December 12.) 1938 Scenes from Broadway play, "Susan and God," starring Gertrude Lawrence, telecast from NBC studios in Radio City. (June 7.) 1939 RCA and NBC introduced television as a service to the public at opening ceremonies of New York World's Fair, featuring Presi- dent Roosevelt as first Chief Executive to be seen by television. (April 30.) Improved television "eye," the "Orthicon," was introduced by RCA. (June 7.) Major league baseball was telecast for the first time by NBC, covering a game between the Brooklyn Dodgers and Cincinnati Reds at Ebbets Field. (August 26.) First college football game—Fordham vs. •Waynesburg—televised by NBC in New York. (September 30.) RCA receiver in plane over Washington picked up telecast from NBC station in New York, 200 miles away, i October 17.) 1940 RCA demonstrated to the FCC, at Camden, N. J., a television receiver producing images in color by electronic and optical means em- ploying no moving mechanism. (Feb. 6.) New York televised from the air for the first time by a plane equipped with RCA portable television transmitter. (March 6.)