One study composed by

Otto B. Wurzburg

(USA, 10.7.1875 - 19.10.1951)

He was mainly a Problem composer.

More about him can be found at many website like ChesscomposerBlogspot and German Wikipedia.

From page 267 of the December 1918 American Chess Bulletin:

 

(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the

Harold van der Heijden database V (31-12-2015) ).