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- Tabeguache Mountain - 14,155' -
- July 31, 1984 - Gary Stearns
- August 29, 1991- Mark Vanderbrook
- May 28, 1994- Bob Broeking - The White Spider
- July 12, 1995 - Brian Schultz
- June 1, 1996 - Larry Mulcahy
- July 28, 1997 - Jeff Keller Jr's Home Page
- July 11, 1997 - Mike Kosel
- May 31-June 1, 1998 - Los Alamos Mountaineers Club
- August 24, 1998 - Theron Welch
- October 11, 1998 - Steve Bremner
- July 4, 1999 - Jim Mallory's Colorado Mountain Climbs
- July 11, 1999 (Browns Creek Trail)- Brian Rachford's Home Page
- June 9, 2000 - Los Alamos Mountaineers Club
- August 26, 2001 - John Maki
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- Taylor Peak
- November 24, 1998 - Gary Swing
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- Teakettle Mountain - 13,819' -
- September 14, 1999 - Jeff Brode
- July 29-Aug 4, 2000 - Doug Cook, Bob Reimann
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- Tenmile Peak - 12,933'
- April 25, 1998 - Steve Fry
- Peak 1 and 2 - July 3rd, 2001 - Ryan Kowalski
- Peak 3 and 4 - July 3rd, 2001 - Ryan Kowalski
- Peak 5 through 9 - July 3rd, 2001 - Ryan Kowalski
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- Teocalli Mountain - 13,208'
- August 7, 1991 - Chris Wetherill
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- East Thorn - 13,333'
- September 2-3, 2000 - Theron Welch
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- Three Corner Table - 13,841'
- late July, 1978 - Chris Wetherill
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- Thunder Pass - 11,300'
- September 9, 2000 - Dawn DuPriest
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- Thunder Pyramid -
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- Tijeras Peak - 13,604'
- Mid July 1985 - Chris Wetherill
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- Torreys Peak - 14,267' -
- Unknown date - Dan Mottinger's Basecamp
- Unknown date - Mark Meng
- Unknown date - Jeff Keller Jr's Home Page
- Unknown date - Phil Geo
- July 24, 1984 - Gary Stearns
- July 1, 1989 - John Seacord
- July 6, 1992- Mark Vanderbrook
- August 28, 1993 - Chris Wetherill
- June 4, 1994- Bob Broeking - The White Spider
- August 15, 1994 - Brian Rachford's Home Page
- June 19, 1996 - Steve Wilkinson - CMC
- July 23, 1996 - Mike Kosel
- August 2, 1996 - Loma Prieta Peak Climbing
- August 17, 1996 - Chris Palmer
- August 18, 1996 - Dawn DuPriest
- August 3, 1997 - Steve Fry
- August 30, 1997 - Nate Berg's Web Stop
- September 27-28, 1997 - Los Alamos Mountaineers Club
- August 23, 1997 - Tim and Tanya
- March 1, 1998 - Brian Kauffman
- April 17-19, 1998 - Los Alamos Mountaineers Club
- June 27, 1998 - Mike Watz
- June 98 - Mountain Goat
- September, 1998 - John Maki
- September 12, 1998 - Steve Bremner
- September 25, 1999 - Jim Mallory's Colorado Mountain Climbs
- November 6, 1999 - Mike Kosel
- December 31, 1999 - Brad Baker
- June 24, 2000 - John Maki
- October 15, 2000 - Morgan Brown
- December 2-3, 2000 - Steve Bremner
- July 6, 2001 - Brannan Cass
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- Traver - 13,852'
- September 16th, 2001 - Ryan Kowalski
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- Treasurevault Mountain - 13,701'
- December 31, 1994 - Bob Broeking - The White Spider
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- Trinity Peaks (West - 13,765, Middle - 13,805, East - 13,803)
- August 1-9, 1998 - Los Alamos Mountaineers Club
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- Mt. Tukuhnikivatz (UT) - 12,482'
- October 1-2, 1999 - Steve Bonowski
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- Turret Peak - 13,935' -
- August 1-9, 1998 - Los Alamos Mountaineers Club
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- Twin Sisters - 11,428'
- June 27, 1999 - Dalene Russo - CMC