Michaelsen, Wilhelm Die Geographische Verbreitung der Oligochaeten

Important American Prints and Paintings Collected by Cornelius Michaelsen, Esq

Rare and Fine Currier & Ives Lithographs and Other Interesting Early American Prints, the Collection of Cornelius Michaelsen, Esq

Michaelsen, Mike Jay Bella und James

Michaelsen, Jørgen Evigt er Lyset i Dåben