 Myrtle tree bark in Calvert Cemetery. Texas, January 15, 2011
 Tomb of Mary Drennan in Calvert Cemetery. Calvert, Texas, December 22, 2011
 Tombstones of Calvert Cemetery at rain. Calvert, Texas, December 22, 2011
 Tombs of Calvert Cemetery at rain. Calvert, Texas, December 22, 2011
 Angel on a tomb of Louis Browning in Calvert cemetery. Calvert, Texas, December 22, 2011
 Tombs of Calvert Cemetery ( section behind the school) at morning. Calvert, Texas, December 27, 2011
 Tombs of Calvert Cemetery ( section behind the school) at sunrise. Calvert, Texas, December 27, 2011
 Pillar on a tomb of C. G. Saurenman (1865 - 1896) in Calvert Cemetery. Calvert, Texas, December 22, 2011
 Tombs of Calvert Cemetery. Calvert, Texas, December 22, 2011
 Tombs of Calvert Cemetery. Calvert, Texas, November 25, 2011
 View of Calvert Cemetery. Calvert, Texas, November 25, 2011
 Marble sleeping figure in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Sculpture on a tomb of Peters in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Alley in Calvert Cemetery in mist. Calvert, Texas, January 8, 2019
 Morning mist in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Marble sculpture of a zealous angel in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Angel on a tomb of Holly Robert in Calvert cemetery. Calvert, Texas, January 19, 2008
 Marble angel with a maimed hand in Calvert Cemetery. Calvert, Texas, January 8, 2019
 An angel on a tomb of Holly Robert in Calvert cemetery. Calvert, Texas, January 28, 2007
 Marble angels on a tomb of Mary Drennan in Calvert Cemetery. Calvert, Texas, January 8, 2019
 A tomb in Calvert cemetery. Calvert, Texas, January 28, 2007
 Gates of Calvert Cemetery. Calvert, Texas, January 8, 2019
 Tombstones in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Tombs in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Rotten tree trunk near Racoon Run Trail in Lick Creek Park. College Station, Texas, January 14, 2011
 Rattan vine submerging in a trunk of a tree on Racoon Run Trail in Lick Creek Park. College Station, Texas, January 14, 2011
 Fibrous tree trunk in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Fibrous tree trunk of cedar in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Stonewall rim-lichen (Lecanora muralis, Protoparmeliopsis muralis) on a horizontal surface of a tomb in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Bare-bottomed sunburst lichen (Xanthomendoza weberi, Gallowayella weberi) (orange) in Calvert Cemetery. Calvert, Texas, January 8, 2019
 Marble tombstone of Mary A. Calvert (10/22/1835-7/24/1881) both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Bark of an oak tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Base of a tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Old rotten tree in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Oak tree bark in Boonville Cemetery. Bryan, Texas, January 5, 2011
 Powdery medallion lichen (Dirinaria applanata) on bark of a crape myrtle tree in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Cedar tree trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Pattern of powdery medallion lichen (Dirinaria applanata) on bark of a crape myrtle tree in Odd Fellow Cemetery. Anderson, Texas, December 31, 2018
 Branch joining cedar tree trunk in Boonville Cemetery. Bryan, Texas, November 14, 2012
 Tracks of land snails, or zigzag marks left by mouthparts (radula) on bark of crape myrtle tree in Fanthorp Cemetery. Anderson, Texas, December 31, 2018
 Marble tombstone shaped as a tree trunk in Bryant Station Cemetery near Buckholts. Texas, December 1, 2012
 Tombstone made from petrified tree trunk at Rice Cemetery at Road 241 near Cameron. Texas, December 1, 2012
 Detail of a marble tombstone in Calvert Cemetery. Calvert, Texas, December 13, 2009
 Tomb of Adelaide Westall in Calvert Cemetery. Calvert, Texas, March 18, 2018
 Tomb of Jonaha Reinhardt in Calvert Cemetery. Calvert, Texas, March 18, 2018
 Gates of Calvert Cemetery (est. 1870) at morning. Calvert, Texas, June 28, 2008
 Tomb of Mary Drennan in Calvert Cemetery. Calvert, Texas, December 13, 2009
 Tomb of Mary Drennan in Calvert Cemetery. Calvert, Texas, July 4, 2012
 Tomb of Mary Drennan in Calvert Cemetery. Calvert, Texas, September 12, 2009
 Tomb of Ben-Jamin, son of Drennam in Calvert Cemetery. Calvert, Texas, September 22, 2007
 Central alley of Calvert Cemetery in Calvert. Texas, March 18, 2018
 Marble obelisk in Calvert Cemetery. Calvert, Texas, December 13, 2009
 Rows of tombs in Calvert Cemetery. Calvert, Texas, March 18, 2018
 Marble angel on a tomb of Holly Robert in Calvert Cemetery. Calvert, Texas, May 9, 2012
 Stone obelisk of Alford Cillam in Calvert Cemetery. Calvert, Texas, March 18, 2018
 A greenish angel on a tomb of Holly Robert in Calvert cemetery. Calvert, Texas, May 28, 2007
 Primitive tomb of Nora Pride in Calvert Beauty Cemetery. Calvert, Texas, December 8, 2007
 Marble angel on a tomb of Holly Robert in Calvert Cemetery. Calvert, Texas, December 13, 2009
 Military tomb of David Hill in Calvert Beauty Cemetery. Calvert, Texas, December 8, 2007
 Oaks of Calvert Cemetery in Calvert. Texas, March 18, 2018
 Marble obelisk in Calvert Cemetery. Calvert, Texas, May 9, 2012
 Tombstone of Calvert Cemetery. Calvert, Texas, October 30, 2010
 Alley of Calvert Cemetery in fog. Calvert, Texas, December 13, 2009
 Tombscape of Calvert Cemetery. Calvert, Texas, December 13, 2009
 Mausoleum in Calvert Cemetery. Calvert, Texas, December 13, 2009
 Fancy sculpture on a tomb of C. G. Saurenman (1865 - 1896) in Calvert Cemetery. Calvert, Texas, September 12, 2009
 Tomb of Benjamin F. Ball in Calvert Cemetery at sunrise, with a former courthouse in background. Calvert, Texas, September 22, 2007
 A greenish praying angel with pillbugs on a tomb of Louis Browning in Calvert cemetery. Calvert, Texas, May 28, 2007
 Pillbugs on a greenish angel on a tomb of Louis Browning in Calvert cemetery at rain. Calvert, Texas, May 28, 2007
 Trunk of a red cedar tree when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Handshake symbol on a tomb both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Tombs of Calvert Cemetery. Calvert, Texas, May 9, 2012
 Calvert cemetery at rain. Calvert, Texas, May 28, 2007
 Tombstones of Calvert Cemetery. Calvert, Texas, May 9, 2012
 Dog vomit slime mold (Fuligo septica) on a stump in overgrown section of Calvert Cemetery. Calvert, Texas, March 18, 2018
 Limestone grave when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Amanita mushrooms in a cemetery behind a school. Calvert, Texas, January 8, 2019
 Limestone grave with lichens when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Open Bible carved on a marble gravestone both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Freemason s carved symbol on a marble gravestone both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Young angel on a tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Calvert Hotel (Dirr Cottage, 1872) at 408 Railroad Street. Calvert, Texas, December 27, 2011
 Tomb of Lyoia Ada (3/10/1860-12/30/1870) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Tomb of Geo Couter (12/31/1839-12/26/1873) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Freemason s carved symbol with greenish lichens on a tombstone both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Handshake symbol on a marble tombstone when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Crustose lichens on a tombstone of S. Shanna when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Calvert Cemetery. Calvert, Texas, May 9, 2012
 Handshake symbol carved on a marble tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Masonic symbol of compass and angle on a tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Marble baby angel on a tomb of Holly Robert Volle (2/15/1882-2/20/1894) in ultraviolet light in Calvert Cemetery. Calvert, Texas, November 3, 2024
 A hand with a book carved on a mable tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 A hand with the index finger pointing right on a gravestone when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Marble tomb of Lottie Parker (4/8/1868-11/4/1873) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Marble tombstone of Benjamin F. Ball (10/27/1852-6/30/1876) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Marble tomb of Olivar Mistrot (12/12/1871-6/6/1872) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Tilted head of an angel on a tomb of Adelaide Drennan Westall (12/13/1876-8/25/1898) both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Marble tomb of Jeff Davis Pistole (9/15/1861-7/9/1902) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
 Tombstone of Anne Brenneman Haines Haldeman (8/29/1824-1/16/1892) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Calvert Cemetery. Calvert, Texas, November 3, 2024
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