There are some that I came upon:
WGY 810 kHz, Schenectady, NY "G" for General Electric, "Y" last letter in
Schenectady.
KGO 810 kHz, San Francisco, CA "G" for GE, "O" last letter in San
Francisco. GE owned both stations many years ago.
WROW 590 kHz, Albany, NY "Row!" (like a dog growling) "Watchdog of the
Capital District".
WPTR 1540 kHz, Albany, NY (back in the 1960s), Patroon Broadcasting Corp.
WROV 1240 kHz, Roanoke, VA (back before 1990s) "RO" for Roanoke, "V" for
Virginia.
WSLS 610 kHz, Roanoke, VA (Before 1980), Shenandoah Life (insurance) Station
WQBA 1140 kHz, Miami, FL (Spanish speaking) Q, pronounced "coo", BA as in
"bah". Said together, it is "Cuba" as said in Spanish.