Buster Keaton has a Lucinda Dickey number of 3.

Buster Keaton
was in
The New March of Dimes Presents: The Scene Stealers
with
Jackie Cooper
was in
You Will Believe: The Cinematic Saga of Superman
with
Mark Rosenthal
was in
Electric Boogaloo: The Wild, Untold Story of Cannon Films
with
Lucinda Dickey