Bob Gros knew Earl Warren prior to his trip to the USSR. The following items were auctioned at the Pacific Book Auction Galleries in January 1999:

328. Warren, Earl. 1891-1974. Chief Justice U.S. Supreme Court. Magnificent sepia, matte finish, three-quarter length portrait photograph in judicial robe, taken by Harris and Ewing, 10.5 x 13.75, inscribed in lower blank white margin: To Bob Gros, from his friend, Earl Warren - 1954. Fine. (250/400) 329. Warren, Earl. Lot of eight items. 1. Typed Letter Signed in full on imprinted Supreme Court of the United Stationery, one page, octavo, Washington, 22 January 1954, to Robert Gros. Sending thanks for champagne. 2. Typed Letter Signed in full on imprinted Supreme Court of the United Stationery, one page, octavo, 18 June 1954. Sending signed photos and coming to the Coast in summer. 3. Typed Letter Signed in full on imprinted stationery as Governor of California, one page, Sacramento, 11 October 1952. About attending the Redwood Empire dinner and his wife's broken foot. 4. Black and white, matte finish photograph of Warren with Gros standing in front of a magazine advertising display, 8 x 10, inscribed and sign in full. 5. Black and white, matte finish photograph of Warren with Gros and three others, 8 x 10, inscribed and sign in full by Warren and his wife, 25 June 1965. 6. Group of three Typed Letters Signed by Mrs. Nina Warren on imprinted Supreme Court stationery, five pages in all. Fine condition. (300/500)