Bingo! The Vavilov Institute of Plant Industry in St. Petersburg, Russia, lists it in their database! I'll try to find out whether they still have seeds and whether we can request them.
I see that the date they acquired the seeds was 1947, and Joe Palmer sold them until 1948. Maybe he sent them a sample when he knew he wasn't going to be selling them any more?
Maybe he sent some to the USDA too, but we cut funding more than they did.
http://www.vir.nw.ru/dev/php/a...
http://www.vir.nw.ru/test/virb...
ACCENUMB: 2928
ACCENAME: SCHOCHLER
TAXONOMY: Cucurbitaceae
GENUS: Citrullus
Species: lanatus
IDDATA: 96745
ACQDATE: 1947
ORICTY USA
DONCTY USA
SAMPSTAT BR
SAMPSTAT Founder stock/base population
Amusingly, I didn't find them by searching the Internet. I knew of them from 20-30 years ago when THEIR funding was being cut drastically, and I sent them a small check. I don't know if all their listings are current, but if even 10% of them are still in storage, they have MANY varieties.
I applaud them for making their accessions searchable by the public.
http://www.vir.nw.ru/
http://www.vir.nw.ru/data/dbf....
http://www.vir.nw.ru/dev/php/a...
http://www.vir.nw.ru/test/virb...
ACCENUMB: 2928
ACCENAME: SCHOCHLER
TAXONOMY: Cucurbitaceae
GENUS: Citrullus
Species: lanatus
IDDATA: 96745
ACQDATE: 1947
ORICTY USA
DONCTY USA
SAMPSTAT BR
SAMPSTAT Founder stock/base population