Benjamin Holt (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Benjamin Holt" in English language version.

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acmoc.org

books.google.com

cagenweb.com

  • "San Joaquin County Biographies: Benjamin Holt". California Genealogy & History Archives. Archived from the original on 2012-04-22.

enotes.com

holtcat.com

holthouse.org

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techdirections.com

uspto.gov

pdfpiw.uspto.gov

  • Holt, Benjamin, "Traction engine," U.S. Patent no. 874,008 (filed: 1907 February 9 ; issued: 1907 December 17).

wastehandling.com

web.archive.org

  • "San Joaquin County Biographies: Benjamin Holt". California Genealogy & History Archives. Archived from the original on 2012-04-22.
  • "Caterpillar History". Archived from the original on 2011-07-19. Retrieved 2010-02-28.
  • "William H. Holt Genealogy and History". Archived from the original on 2008-08-20. Retrieved 2010-02-27.
  • Lea, Ralph; Christi Kennedy (February 16, 2008). "Ben Holt pioneered tractors for farming, construction, war". Lodi News-Sentinel. Archived from the original on November 11, 2009. Retrieved 2008-02-27.
  • "Benjamin Holt" (PDF). Production Technology. 2008-09-25. Archived from the original (PDF) on 2009-11-04. Retrieved 2010-02-24.
  • Pernie, Gwenyth Laird (March 3, 2009). "Benjamin Holt (1849-1920): The Father of the Caterpillar tractor". Archived from the original on August 3, 2012.
  • "HOLT CAT - Texas Caterpillar Dealer Equipment Sales and Service". 2007. Archived from the original on 2007-04-19. Retrieved 2010-02-24.