Up in the Connecticut area we had:

Newmark & Lewis (Dick Lewis is watching)
Tokyo Shapiro
Sound Playground
Lechmere (department store with a really nice electronics section)

NY had:

J&R (those amazing catalogs)
Newmark & Lewis
Trader Horn
The Wiz
P.C. Richard
Tops
smaller places like 42nd Photo

Any others? What about NJ?