-
-
Appletons' Popular Science Monthly, February 1900
Various
-
Appletons' Popular Science Monthly, October 1899
Various
-
Appletons' Popular Science Monthly, June 1899
Various
-
Scientific American, Volume 17, No. 26 December 28, 1867
Various
-
Appletons' Popular Science Monthly, January 1900
Various
-
The Popular Science Monthly, July, 1900
Various
-
The Popular Science Monthly, September, 1900
Various
-
The Popular Science Monthly, August, 1900
Various
-
Appletons' Popular Science Monthly, August 1899
Various
-
The Popular Science Monthly, June, 1900
Various
-
Appletons' Popular Science Monthly, September 1899
Various
-
Appletons' Popular Science Monthly, May, 1900
Various
-
Appletons' Popular Science Monthly, May 1899
Various
-
Appletons' Popular Science Monthly, November 1899
Various
-