00741cam a2200193 4500 377038114 TxAuBib 20170330120000.0 150906s2015||||||||||||||||||||||||eng|u 49893 Project Gutenberg PGUSA eng TxAuBib Bruce, H. Addington, (Henry Addington.) The Mentor [Gutenberg] : Great American Inventors, Vol. 1, Num. 29, Serial No. 29 / H. Addington Bruce. Project Gutenberg, 2015. Eli Whitney -- Robert Fulton -- Elias Howe -- Samuel F. B. Morse -- Alexander Graham Bell -- Thomas Alva Edison. Public domain in the USA. Text. Inventors -- United States. http://www.gutenberg.org/ebooks/49893