Gerry Wright from ZoneZebra Productions in San Francisco provides the following...

From John Dunning's book "On the Air: The Encyclopedia of Old-Time Radio": "Shafter Parker and his Circus," juvenile adventure serial. Broadcast 1939-40, Don Lee Network, West Coast only. 1941, Mutual, brief national hookup. Cast: Hal Berger as Gen. Shafter Parker, owner of a circus who, with his sister Dolly (played by Dale Nash, aka Mrs. Berger) braved the wilds of Africa to get animals for his show. This show grew out of an earlier show, "The In-Laws." Hal Berger, a baseball announcer in season ... created the title character in 1930. ... Though a thriller, violence was downplayed, and no character was ever killed on the show. Berger wrote a balance between circus and safari life and kept the comedy element high.

We thank Mark Reesor for this...

From a site on geocities.com

Parker, Shafter. General Shafter Parker was created by Hal Berger and appeared in "Shafter Parker and His Circus," running from 1939 to 1941. Parker was a circus owner who traveled across Africa trying to capture animals for his show and encountering various stereotypically African natives and adventures on the way. Among the other workers in the circus were Sister Dolly, Moldy Reimer, and Tamboo the Kangaroo Man. Interestingly, on at least one occasion Shafter's circus performed in Africa itself, a decidedly non-stereotypical thing.

This page mentions the show

hometown.aol.com/jongie/radio.html

These shows would continue on into the early afternoon hours, but the more popular ones were in the morning. About the time the kids started to arrive home from school the fare would shift to the type geared to their interests. There was "Jack Armstrong, the All-American Boy", "Little Orphan Annie", something called "Shafter Parker's Circus"......

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