Reported Crop Circles for the State of Texas -

Calvert, Robertson County (December 11, 1973)

A single circle is reported; no further details known.

Crop type: Unknown

Source: The Secret History of Crop Circles, Terry Wilson

City / County / Date:

• Fort Worth, Tarrant County
  (May 1968)
• Calvert, Robertson County (December 11, 1973)
• Grapevine, Tarrant County
  (May 4, 1974)
• Copperas Cove, Coryell County (February 20, 1975)
• Whiteface, Cochran County (March 10, 1975)
• Denrock / Dalhart, Dallam County (1989)
• [Unknown], (August 19, 1993)
• Waxahachie, Ellis County
  (March 5, 1994)
• Georgetown, Williamson County (July 30, 1994)
• Lone Star, Morris County
  (May 24, 2003)
• Clint, El Paso County
  (September 27, 2004)
• Sabine Pass, Jefferson County (November 30, 2005)
• Rio Hondo, Cameron County (September 7, 2006)