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Saxe, Stephen. "Ottmar Merganthaler and the Linotype." Letterpress Commons. Web. 14 Nov. 2014.
Spear, Michael. "The Linotype Machine: Thomas Edison Called It the "Eighth Wonder of the World"" Linotype.html. 15 Aug. 1996. Web. 14 Nov. 2014.
"The Baltimore Literary Heritage Project." Otto Mergenthaler. Web. 14 Nov. 2014.
The New Encyclopaedia Britannica (Macropaedia Vol. 8). 15th ed. Chicago: Encyclopaedia Britannica, 2010. Print.
Saxe, Stephen. "Ottmar Merganthaler and the Linotype." Letterpress Commons. Web. 14 Nov. 2014.
Spear, Michael. "The Linotype Machine: Thomas Edison Called It the "Eighth Wonder of the World"" Linotype.html. 15 Aug. 1996. Web. 14 Nov. 2014.
"The Baltimore Literary Heritage Project." Otto Mergenthaler. Web. 14 Nov. 2014.
The New Encyclopaedia Britannica (Macropaedia Vol. 8). 15th ed. Chicago: Encyclopaedia Britannica, 2010. Print.