Copeland continued performing, eventually contributing a song (I Ain't Married No More) to the Ziegfeld Follies of 1917.

Some newspapers state that "Les Copeland, former international cabaret pianist is in Wall Street", indicating that he may have dabbled in finances for a while, although this is unconfirmed.

He ended up in San Francisco in the mid 1930s, enjoying the traditional jazz/ragtime revival thanks to the efforts of Lu Watters and Wally Rose a few years later.

In the 1940 census, Copeland and his wife, Hazel, were listed as living on Montgomery Street, with Les working as a dramatic teacher.

[2] Les Copeland's playing and composing style was very distinctive, harkening back to the earliest days of ragtime.