Congressman Ben Reifel at the Clazton Drop Zone training area at Fort Richardson, Alaska in 1964
Congressman Ben Reifel looks at a Yukon stove at Fort Richardson, Alaska in 1964
Congressman Ben Reifel looks at an exhibit in the Museum of Natural History at the Smithsonian Institution in 1966
Congressman Ben Reifel shakes hands with a South Dakota homemaker
Congressman Ben Reifel, Martha Henderson, Congressman Joseph M. McDade, and William W. Warner at the Smithsonian Institution in 1966
Congressman in a snow cave prepared for cold weather survival at Fort Richardson, Alaska in 1964
Congressman Robert T. Ashmore interacts with an exhibit at the Smithsonian Institution in 1966
Congressmen emerge from a snow cave prepared for cold weather survival at Fort Richardson, Alaska in 1964
Congressmen watch troops of the US Army Alaska in recent exercised held at Fort Richardson in 1964
Convolvulus arvensis
Convolvulus sepium
Cornus stolonifers
Correspondence, South Dakota basketball delegation to Cuba
Coteau Forest
Cottonwood forest at Garrison Reach, North Dakota
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Havana, Cuba
Courtyard in Semipalatinsk, Russia in 1913
Cows on the McFadden farm
Crataegus rotundifolia
Crazy Bear allotment, 1930
Cuban and US flags in opening ceremony of basketball game in Cuba
Cuban and US flags in opening ceremony of basketball game in Cuba
Cuban man and woman
Cuban man and woman
Cuban national team basketball player speaking with a man
Cuban national team basketball players dining
Cushion Plant, Alpine, Colorado Rockies
Cushion Plant, Colorado Alpine
Cystopteris fiddleheads
Cystopteris fragilis
Dancers in Cuba
Dancers in Cuba
Dancers in Cuba
Dancers in Cuba
Dancers in Cuba
Dancers in Cuba
Dancers in Cuba
David Garnier allotment 1930
David Gillespie allotment, 1930
Dead myrtle warbler
Decadent elm tree at Garrison Reach of the Missouri River, North Dakota
Decorah Shale Stratigraphy
Delegation of the Mexico-United States Interparliamentary Group, 1962-1963
Delores Racine-Blackfeet with Ben Reifel
Demonstration for modernizing America in 1965
Desmodium canadense
Devils Lake before Flooding
Dicentra cucullaria
Dicentra cucullaria
Dicentra cucullaria
Display at Pier 5 in Miami, Florida
Dock at the port in Tokyo Bay at Yokahama, Japan in 1924
Doll's Eyes, Rocky Mountain Colorado
Don Hunter, Representative Ben Reifel, and Merle Flyger
Dr. Ben Reifel presiding over an assembly discussing Indian boarding school issues
Dr. Harold Lutz Lecturing University of Colorado Mountain Ecology Class
Dr. John Marr Lecturing to Alpine Ecology Class
Dr. N.E. Hansen at a horticultural display, undated
Dr. N.E. Hansen in a South Dakota State College greenhouse, undated
Dr. N.E. Hansen in a South Dakota State College greenhouse, undated
Dr. N.E. Hansen in a South Dakota State College greenhouse, undated
Dr. N.E. Hansen in a South Dakota State College greenhouse, undated
Dr. N.E. Hansen, undated
Dr. N.E. Hansen, undated
Dr. Paul Kilburn Summer Instructor of Mountain and Alpine Ecology Classes
Dwarf Willow Alpine Colorado Rockies
Echinacea angustifolia
Echinacea angustifolia
Echinocystis lobata
Edgar S. McFadden
Edgar S. McFadden at a Texas A & M University in College Station, Texas around 1950
Edgar S. McFadden at work in his office at Texas A & M University
Edgar S. McFadden doing research in wheat genetics
Edgar S. McFadden during Hobo Day at South Dakota State College in 1917
Edgar S. McFadden in a flax field at Kenedy in 1949
Edgar S. McFadden in a test plot of wheat
Edgar S. McFadden in a wheat field
Edgar S. McFadden in uniform during World War I in 1917
Edgar S. McFadden kneeling in a wheat field
Edgar S. McFadden looking at wheat
Edgar S. McFadden sitting at his desk in 1951
Edgar S. McFadden test plot of wheat
Edgar S. McFadden with a group of people
Edgar S. McFadden with a group of people
Edgar S. McFadden with a group of people
Edgar S. McFadden with a group of people
Edgar S. McFadden with potted wheat plants
Edgar S. McFadden, Manley Champlin, and Oliver Smith conducting small grain experiments
El Capitolio
Eleagnus angustifolia
Eleagnus angustifolia