[78-L] Help with Playtime Matrices

[David Lewis]

Got a little stack of Playtimes here. The top one is an ARC Playtime and it easily dates to 1931; some bear familiar Columbia matrices and are no problem to date.
But I am flummoxed by some four digit matrices. Who made these, and when were they made?
Playtime 221A 4030-4 Ernest Hare : Yankee DoodleB 4027-4 Vernon Dalhart : Hail Columbia
Playtime 223A 4060-2 Arthur Hall : Oh Dear What Can the Matter BeB 4081-2 Arthur Fields: The Jolly Miller
Playtime 245A 9965-2 Playtime Dance Orchestra : MinuetB 9962-3 Playtime Dance Orchestra : Polka

Uncle Dave Lewis
uncledavelewis at hotmail.com