7.4
/1946
6.88
/2004
7.216
/2003
7.295
/1995
7.708
/1943
7.475
/1975
6.65
/1956
7.596
/1991
7.842
/1990
7.911
/1992
4.2
/1968
6.5
/1974
7.501
/1970
6.812
/1980
5.573
/2001
6.472
/1995
7.214
/2009
6.5
/1968
William Dunn
George Bradley
Maj. John Wesley Powell
Walter Powell
Oramel Howland
Billy Hawkins
Frank Goodman
Jim Baker
Ashtishkel
Indian chief
Andrew 'Andy' Hall
6.875
/1960
6.7
/1960
7.618
/2017
8.5
/2008
6.487
/2011
8.01
/2009
6.653
/2013
8.216
/2009
6.343
/2014
6.971
/2017
6.575
/2012
7.422
/2016
7.046
/2010
8.454
/2014
7.589
/2008
6.6
/2011
7.497
/1997
6.283
/2015
7.569
/2015
7.225
/1990
