Surfing the net I found these great pictures of the Double RL, Soho store. They had some amazing vintage motorcycles on display in there flagship store from the turn of the century. Saying turn of the century means the 1900's. American bikes like an Indian and Harley Davidson, but also for me total unknown bikes like the Yale and Thor.
Thor motorcycles were made by The Aurora Machine and Tool Company, which began as a machine shop in 1886, providing forging, castings and parts for many bike manufacturers.
The history of Thor is closely tied to the history of Indian motorcycles.
The Yale motorcycle was built by the Consolidated Manufacturing Company based in Toledo, Ohio, after they had acquired the rights to the California motorcycle. The California is famous as the first internal combustion vehicle to cross the American continent in 1903.
(pics are made by Chad Davis)