Source: Match Programme, 23rd December 1950
Aberdeen have picked up another promising youngster in Willie Sinclair, one of their provisional signings from Blairhall Colliery. He is only seventeen years old. Sinclair had a good game on the right wing for the young Dons against Leith Athletic at Pittodrie on Saturday. He is a clever ball player and combined well with Newlands.Source: Aberdeen Evening Express 24th December 1950
Source: Press & Journal, 25th December 950