Willies, the, n. — Green’s Dictionary of Slang

Willies, the n.

[play on name; ? influenced by holy Willie under holy adj.]

(US tramp) the Good Will Industries of the Methodist Church.

1930

‘Dean Stiff’ Milk and Honey Route 52: The Good Will Industries of the Methodist Church. These noble institutions, found in every city of the land, are known as the Willies.