Lost Neighborhood?

While hanging out at the Hennepin History Museum last week, I randomly browsed several books about Minneapolis History.

I am now kicking myself for not taking better notes.

I read something, somewhere, in some book or other about a "lost" neighborhood which lay roughly under the Minneapolis Farmer's Market on Lyndale.

I think it was called something like Oak Lake? (Oak Park? Lake Oaks?)

ARGH! Why didn't I write that down??????

Has anybody ever heard of this neighborhood????