[78-L] Microgroove 78s

[David Lennick]

Steven C. Barr wrote:
> 
> BTW, I know Columbia issued 7" LP "singles"...did they also issue 7"
> 78rpm discs?
> 
> ...stevenc 
> 

Columbia manufactured 7" microgroove 78s as premiums for Johnson's Wax and 
other companies, messages from Oral Roberts, and other custom items that I've 
seen, and those were what I was referring to. But don't forget their Playtime 
label, inherited from the Plaza Group, and which continued well into the 
fifties (a bit smaller than 7" in the later years). Any I've seen have been 
standard groove.

dl