Michael,

Regarding Martin and Osa Johnson

I have not been to the Martin and Osa Johnson Safari Museum for several years but think they have a few guns and rifles in the collection. The web site is http://www.safarimuseum.com/index.htm
The people at the museum were very friendly and perhaps they have some correspondence regarding who may have built rifles for them.

I remember watching TV in the 1950's and thought they were great films and interesting people. Read several of the books and found them to be good also.

Cheers,
Laurie

falling block