Harry Baljet was the author of the comic strips for the monthly children's magazine Ping, that was published by the Raiffeissen (Rabo) Bank from 1966 until 1983. Baljet wrote the stories of 'Ping-Li-Ping', 'Buffalo Bill' and 'Ruimte-patrouille SP-3', that were all illustrated by Gerard van Straaten (Sidoan). Baljet himself provided the art for illustrations, covers and the comic strip 'Kleine Ping'. Some of the comics from Ping were collected in the 'Ping boek' in 1973. Baljet continued the production of Ping comics on his own after Van Straaten quit in 1978.