These pieces comprised part of Beistle's first party set issued in 1918. There were 74 pieces to this set It is an extraordinarily difficult set to find complete. Beistle significantly reduced the number of pieces to 34 in their next iteration, released in 1922. Their final party set was released the following year with 30 pieces.
Pieces from Beistle's very first boxed party set are tough to get. In my view, the bug base is the best one they issued. The 1918 set consisted of 74 different items. If you like the design aesthetic from this early effort (...and who wouldn't?), snap this trio up before somebody else does.