This entry is part of an ongoing series highlighting new acquisitions. The Archives of American Art collects primary source materials—original letters, writings, preliminary sketches, scrapbooks, photographs, financial records and the like—that have significant research value for the study of art in the United States. The following essay was originally published in the spring 2016 issue (vol. 55, no. 1) of the Archives of American Art Journal. More information about the Journal can be found at http://www.journals.uchicago.edu/toc/aaa/current. Albert Bloch in his studio, 1932 / unidentified photographer. Albert Bloch papers, 1873-2014. Archives of American Art, Smithsonian Institution. 1911 Blaue Reiter (Blue Rider)...