Ron, It's still an incredible flea market find! Congratulations.

Here are partial rosters for the 1946 & 1947 Oakland Larks just in case:

1946 Oakland Larks (West Coast Negro League)

Jim West, Player/Manager
Charles "Specs" Roberts, right handed pitcher
Lionel Wilson, left handed pitcher
Wade James, pitcher
Marion "Sugar" Cain
"Wee" Willlie Jones
Albert "Smiley" Clayton
Demery
Mays
Poole
Allen
Reid

1947 Oakland Larks (barnstormers)

Specs Roberts
Smiley Clayton
Foy Scott, right handed pitcher
Sugar Cain
Flowers
Jenkins
Allen
Colthrist
Charles

Here's an article on Lionel Wilson from SABR & if you get a chance check out the Shadowball Express blog which is loaded with great Bay Area black baseball history:
http://sabr.org/latest/miyamoto-mayo...-oakland-larks