The A's went the entire 2019 season without ever wearing their alternate gold jerseys, even once, yet they have not actually dropped them- they are still officially an A's uniform. : r/baseball
Oakland Athletics Top 20 Prospects for 2013 - Minor League Ball
Lot Detail - 1971 Jerry Lumpe Game Used Oakland A's Yellow Jersey Vest (MEARS)
Are A's new uniforms gold or yellow? - Mangin Photography Archive
Report: Mets willing to "overpay" to acquire Ben Zobrist - NBC Sports