Rolf Beck
https://riverreporter.com/stories/rolf-beck,15702
Joseph DiLorenzo
Aka Joseph DeLorenzo
Sometime has a space before the L in Lorenzo
https://dickjohnsonsdatabank.com/di-lorenzo-joseph.html
Joseph Emile Renier
https://en.wikipedia.org/wiki/Joseph_Emile_Renier
Margaret Grigor
https://en.wikipedia.org/wiki/Margaret_Christian_Grigor
https://dickjohnsonsdatabank.com/grigor-margaret.html
Herman Becker
https://dickjohnsonsdatabank.com/becker-hermann-albert.html
Robert Weinman
https://en.wikipedia.org/wiki/Robert_Weinman
Joseph Josephu
Aka Josef Josephu
https://www.askart.com/artist/Josef_Josephu/11043315/Josef_Josephu.aspx
Abram Belskie
https://en.wikipedia.org/wiki/Abram_Belskie
Albert P. D'Andrea
https://dickjohnsonsdatabank.com/dandrea-albert-philip.html
Helmut K. Wimmer
https://en.wikipedia.org/wiki/Helmut_Wimmer
I didn't think this was the same person at first then found this article that mentions him
