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Glen Alps (1914-1996) was a printmaker and educator who is credited with having developed the collagraph. A collagraph is a print whose plate is a board or other substrate onto which textured materials are glued. The plate may be inked for printing in either the intaglio or the relief manner and then printed onto paper. Although the inventor of the process is not known, Alps made collagraphy his primary art form and coined the word "collagraph" in 1956. He disseminated the techniques he developed for making collagraphs during his long career as both an artist and a teacher.