Scientific American Supplement, No. 829, November 21, 1891
By Authors Various Authors
Scientific American Supplement No. 822, October 3, 1891
By Various .
Scientific American Supplement, No. 821, September 26, 1891
By Various .
Scientific American Supplement No. 819, September 12, 1891
By Various .
Scientific American Supplement, No. 810, July 11, 1891
By Various .
Scientific American Supplement, No. 803, May 23, 1891
By Various .
Scientific American Supplement, No. 799, April 25, 1891
By Various
Scientific American Supplement, No. 795, March 28, 1891
By Various .
Scientific American Supplement, No. 794, March 21, 1891
By Various .
Scientific American Supplement, No. 787, January 31, 1891
By Various .
