The colored inventor ; a record of fifty years

Eitemau Tebyg

• The colored inventor ; a record of fifty years
  gan: Baker, Henry E. (Henry Edwin), b. 1859
  Cyhoeddwyd: (1913)
• Inventors & inventions
  gan: Robinson, H. Wheeler (Henry Wheeler), 1872-1945
  Cyhoeddwyd: (1911)
• Great inventors and their inventions
  gan: Bachman, Frank P. (Frank Puterbaugh), 1871-1934
  Cyhoeddwyd: (1918)
• American inventions and inventors
  gan: Mowry, William A. (William Augustus), 1829-1917
  Cyhoeddwyd: (1900)
• The great inventions .
  gan: Wilkie, Franc B. (Franc Bangs), 1832-1892
  Cyhoeddwyd: (1887)