sentences:  For his 1916 volume, "Bibliography of Fishes", Dean was awarded the Daniel Giraud Elliot Medal from the National Academy of Sciences in 1921.As his career in ichthyology progressed, his focus eventually shifted toward the subject of armor and by 1900 he had amassed a private collection of approximately 125 armory specimens.In 1904, Dean initiated the process of establishing the Metropolitan Museum of Art's Department of Arms and Armor, serving first as guest curator while organizing the collection of , quickly progressing to the position of honorary curator in 1906 and finally to the position of founding curator on October 28, 1912, then working for the Met full-time.