The 1947 CT State Register lists WMMB, 1470 KHz, owned by Silver City Crystal Co. under construction. The authoization is for 1000 watts, day-only. The same souce indicates that the call letters WMMW the next year. We're not sure whether the "WMMB" was a misprint or actual call letters.
Interestingly, the same edition of the Register notes the authorization of a new FM station in Meriden with the same licensee as the above AM: 7,000 watts on 92.7 MHz. We don't know if this station was ever built.

Towers

WMMW Transmitters