 Under Linderfelt 's leadership , the Milwaukee Public Library developed a new charging system and a pencil dater for due dates that was widely adopted by libraries . He wrote professional articles and his book Eclectic Card Catalog Rules , based on the work of Karl Dziatzko as well as numerous English language librarians like Melvil Dewey , was published by Charles Ammi Cutter in 1890 . He also wrote on other topics , such as the book Volapük : An Easy Method of Acquiring the Universal Language ( 1888 ) , about the constructed language . 
