Western Pacific Bicentennial GP40 1976 is seen at San Francisco CA on the actual Bicentennial July 4, 1976. The 1976 was built as WP 3541 in September 1971. Companion GP40 1776(WP 3540) was also built in September 1971. These two units were joined by Southern Pacific and Santa Fe Bicentennial power on this day as well. Unknown Photographer Photo from my Collection.