They all first appeared in the "Crime at the Clover Club" story in Feature Comics #49, October, 1941. The last Sisson story appeared in the last issue, #144, May 1950. The Sisson stories were written and drawn by Phil Martin. Feature Comics was published by Quality Comics.
The band has a regular gig at Pete Jaxon's Clover Club on Broadway in New York City.
At some point in the run of the series, Toby seems to have switched from saxophone to trumpet.