I've caught crappie in various places as one-offs, but I've never really found where they congregate in sufficient numbers to target them.  I know Black Lake has them.  Anyplace else in the vicinity where they have sufficient numbers?

This could be a whole forum unto itself.  The short answer: I've caught black crappie in just about every lake or pond I've fished in NY state.  Pre-spawn is a good time to find them shallow.  During bass spawn, they are well known nest raiders.  Tiny jigs, crappie minnows (fatheads), and tiny cranks do well.

1 hour ago, J Francho said:

Pre-spawn

J: Are we talking mid-June-ish?

Depends.  Could be early May, to early June.  Depends on the weather.