Collector Milton M Ong is a former US Army Major and has been collecting since 1980. Milton collects all forms of Asian art, particularly pieces from Japan and China. Items in his collection include Japanese hawk paintings, Chinese ceramics, and Japanese armor, swords and related arts. Milton's philosophy is to "collect what appeals to you".
As for Ukiyo-e, Milton has an impressive collection. He likes the various themes present in Ukiyoe, especially warrior prints (musha-e) such as the 47 Ronin series. Prints by Kuniyoshi, and the "100 Aspects of the Moon" series by Yoshitoshi are also some of his favorites.
You can look for Milton on Facebook, where he is active in the Ukiyoe print groups.
Below are some photos from Milton's collection.
No. 44, Mase Chûdayû Masaaki, from the series Stories of the True Loyalty of the Faithful Samurai (Seichû gishi den) 1847