Volumes from the second edition of Salmonsens Konversationsleksikon (1915–1930). Volumes of the second edition often display an uneven appearance due to an inferior quality of leather used during World War I.
Salmonsens Konversationsleksikon is a Danishencyclopedia that has been published in several editions.
Salmonsens Store Illustrerede Konversationsleksikon, 19 volumes, Copenhagen: Brødrene Salmonsen, 1893–1911
Salmonsens Konversationsleksikon, 2nd edition, editors: Christian Blangstrup (I–XXI), Johannes Brøndum-Nielsen and Palle Raunkjær (XXII–XXVI), 26 volumes, Copenhagen: J. H. Schultz Forlagsboghandel, 1915–1930.
Den Lille Salmonsen, 3rd edition, 12 volumes, Copenhagen, 1937–1940.
Salmonsen Leksikon-Tidsskrift (SLT), Copenhagen, 1941–1955. A series of booklets issued monthly.