Another version of (c) of this rare set, with Minko's signature above a seal and the name of the engraver Yamaguchi Bokuyo in the right margin, is illustrated in The Clarence Buckingham collection of Japanese prints, Vol. II, The Art Institute of Chicago, 1965, p. 169
A set of these prints was sold at Sotheby, Wilkinson & Hodge on 2 December 1910, Baron Walter von Heymel collection, lot 25. The set was wrongly attributed to Suzuki Harunobu then. Another set with an original wrapper was sold by the same on 21 July 1914, W. O. Danckwerts collection, lot 44