Copyrighted 1916 by Press Publishing Co.
Per Publisher's Weekly section, Index to Fall Announcement, from September 22, 1917: Hans and Fritz (listed as Hans und Fritz); Hawkshaw the Detective (listed as Hawkshaw, the Detective); Lady Bountiful; and Nippy's Pop were listed as a "comic series" and "cartoon books" being sold for 35 cents each and scheduled to be released sometime during the Fall of 1917.