Doing my first book, Pulpografia (2000), I encountered one or two Finnish translations of short stories by one Earl Peirce Jr. His name may have been written "Pierce" in the Finnish magazines. I didn't find any info on him, except that he wrote for Weird Tales and later on crime pulps, such as Detective Tales. I googled him earlier today (for a purpose I'll reveal later) and found out this post on a genealogy site. Someone has really done good work on Peirce, a really little known writer!
I put up Peirce's tentative bibliography here in my bibliography blog.