1981-2007 14 volumes in 14. Over 2000 p., 141 full colour plates, paperbound. Arbeitsgemeinschaft rheinisch-westfälischer Lepidopterologen.A privately printed, local faunal description by several different authors, with many hundreds of clear macro-photos of butterflies and moths including many that are seldom figured. This set includes the initial, unnumbered part, which was privately published by Karl Stamm, with the slightly different title and subject, "Prodromus der Lepidopteren-Fauna der Rheinlande und Westfalens". A continuous run, from the start, such as this one is now rare. After 2007, four more volumes were published. Several volumes in this run (2-4, 12) are now out of print. Tiny previous owner's stamp on most front covers and top margin of title pages. Otherwise a very good set.