Catalog of Principal Variable Stars with Variable Star Charts, Showa 23 (Series IV), Showa 24 (Series V), Showa 25 (Series VI), 3-volume set, Edited by Shigeru Kanda, Koseisha Koseikaku Edition. Catalog of Principal Variable Stars with Variable Star Charts, Series IV, Series V, Series VI. There is yellowing, scratches, stains, folds, and tears due to aging. There are some underlines and other markings in the Showa 23 and Showa 24 volumes. Please forgive any oversights.