These two had thundering voices reading:

"The Spirit of New England, WBZ Boston, Group W Westinghouse Broadcasting"

__ oclock, Someplace Special, (instrumental of call sign jingle) 1020 KDKA
Pittsburgh, Group W, Westinghouse Broadcasting.

and a local one had the local jock had to read (I/m not kidding)

AM 13 WWCH Clarion, its __ oclock, a good time for Mongs milk, fresh from
the moo to you.........


KDS