Fire protection, showing first section completed and men at work on steps of new steel tower at hickory cabin, 1938
Mammoth Cave National Park; National Park Service
Forestry, pruning trees along telephone line, cleared area on Highway 70, 1938
Mammoth Cave National Park; National Park Service
Front view of small barn on Rena Davisproperty, tract no. 469, 1938
Mammoth Cave National Park; National Park Service
Back and end view of house on E.G. Parsleyproperty, tract no. 492, 1938
Mammoth Cave National Park; National Park Service
Showing front view of hotel at historic entranceto Mammoth Cave, 1938
Mammoth Cave National Park; National Park Service
Cave, passing rock from narrow passage to make fill in trail near Cathedral Domes, 1938
Mammoth Cave National Park; National Park Service
Back, front and side views of Elijah Davisbarn, tract no. 322, 1938
Mammoth Cave National Park; National Park Service
View of house on Elijah Davis property, tract no. 322, 1938
Mammoth Cave National Park; National Park Service
Meeting of the American Legion on the lawn of the Mammoth Cave Hotel, 1938
Mammoth Cave National Park; National Park Service
Black enrollee in sick bay having pulse checked by CCC enrollee
Mammoth Cave National Park; National Park Service
Showing interior of army office at NP-1, 1938
Mammoth Cave National Park; National Park Service
Ranger Welden administers first aid to young fox that was struck by car in park area and carried to headquarters for first aid treatment, 1938
Mammoth Cave National Park; National Park Service
Ranger Welden administers first aid to young fox that was struck by car in park area and carried to headquarters for first aid treatment, 1938
Mammoth Cave National Park; National Park Service
Foot trail construction, foot trail to Carmichael entrance after it was reworked and graveled by NP-4, 1938
Mammoth Cave National Park; National Park Service
Forestry, catching branch after it was partly sawed off, climber is tossing branch free of telephone and electric wires below, 1938
Mammoth Cave National Park; National Park Service
Construction, New Echo River Road, Station 91+75, 1938
Mammoth Cave National Park; National Park Service
Showing large encampment of US army at Frozen Niagara/New Entrance Hotel area with tent and entire camp in order
Mammoth Cave National Park; National Park Service
Posed portrait of unidentified uniformed NPS ranger
Mammoth Cave National Park; National Park Service
Group walking down trail to historic entrance of cave
Mammoth Cave National Park; National Park Service
Cave, showing new discovery part of cave and itsformation of gypsum, and other formation part of old Mammoth Cave, four guides leaning on large rimstone dam, 1938
Mammoth Cave National Park; National Park Service
Cave, showing new discovery part of cave and itsformation of gypsum, and other formation part of old Mammoth Cave, 1938
Mammoth Cave National Park; National Park Service
Cave visitors leaving Mammoth Cave Hotel area for cave trip
Mammoth Cave National Park; National Park Service
Construction, laying and rolling asphalt on walk to cave, between hotel and guide house, 1938
Mammoth Cave National Park; National Park Service
Forestry, characteristic saw pruning, wound on strongly branched Red Cedar before chisel work to produce a flush cut, 1938
Mammoth Cave National Park; National Park Service
Fire protection, portable rack for power pumper with handles recessed, 1939
Mammoth Cave National Park; National Park Service
Fire protection, portable rack for power pumper with handles extended, 1939
Mammoth Cave National Park; National Park Service
Group portrait of Mammoth Cave guides that made new discovery on old Mammoth Cave, left to right Claude Hunt, Carl Hanson, Leo Hunt, Pete Hanson, 1939
Mammoth Cave National Park; National Park Service
Construction, mixing concrete to be used in putting floor in utility garage, 1939
Mammoth Cave National Park; National Park Service
Commanding officer and superintendent at NP-1, 1939
Mammoth Cave National Park; National Park Service
Construction, key area trunk sewer station 40+50, 1939
Mammoth Cave National Park; National Park Service
Scale showing height of cave ceiling, Cox Case
Mammoth Cave National Park; National Park Service
Man with lantern in cave, electric wires are in foreground of photo
Mammoth Cave National Park; National Park Service
Cave, Carl Hanson measuring height of ceiling, Cox Case
Mammoth Cave National Park; National Park Service
Unidentified woman seated in Jenny Lind's Armchair during cave tour
Mammoth Cave National Park; National Park Service
Forestry, showing men transplanting small Locust trees, 1939
Mammoth Cave National Park; National Park Service
Construction, Bransford Springs water supply 4" pump line looking from sta. 14x50 to about sta. 9x00, 1939
Mammoth Cave National Park; National Park Service
Group of park visitors walking down trail
Mammoth Cave National Park; National Park Service
Cave, Bridal Altar, four girls, one guide and two men posing
Mammoth Cave National Park; National Park Service
Two women in Mammoth Cave looking back at Martha Washington's silhouette
Mammoth Cave National Park; National Park Service
Group portrait of eight men and women, Butler family reunion
Mammoth Cave National Park; National Park Service
Forestry, transplanting tree, 1939
Mammoth Cave National Park; National Park Service
Two men playing ping pong, Mammoth Cave Hotel
Mammoth Cave National Park; National Park Service
Forestry, transplanted tree, 1939
Mammoth Cave National Park; National Park Service
Forestry, transplanted tree, 1939
Mammoth Cave National Park; National Park Service
Dogwood, transplanting Frozen Niagara, 1939
Mammoth Cave National Park; National Park Service
Construction, new headquarters for colored employees at Mammoth Cave Hotel, 1939
Mammoth Cave National Park; National Park Service
Doorman unloading luggage from a Cadillac with 1939 California Worlds Fair license plates, Mammoth Cave Hotel
Mammoth Cave National Park; National Park Service
Completed pumphouse at Bransford Springs, 1939
Mammoth Cave National Park; National Park Service
Cave, guide and announcer just before starting in the Frozen Niagara entrance for "Men at Work" program broadcast by WSM, 1939
Mammoth Cave National Park; National Park Service
Cave, broadcast by WSM "Men at Work" program, a guide was interviewed taking the regular Frozen Niagara trip, 1939
Mammoth Cave National Park; National Park Service
Cave, New Discovery, mud cracks in lake basin
Mammoth Cave National Park; National Park Service
Erosion, tree planting, enrollee standing in the middle of trees, 1939
Mammoth Cave National Park; National Park Service
Four women playing shuffleboard
Mammoth Cave National Park; National Park Service
Doubles tennis on the Mammoth Cave Hotel front lawn
Mammoth Cave National Park; National Park Service
Cave, New Discovery, gypsum which has the appearance of spun glass
Mammoth Cave National Park; National Park Service
Telephone line construction, using truck to stretch aerial cable on new telephone system line, 1939
Mammoth Cave National Park; National Park Service
Fire prevention, new fire truck, Chevrolet, at NP-2, 1939
Mammoth Cave National Park; National Park Service
Construction, work on operators shop at utility area, 1939
Mammoth Cave National Park; National Park Service
Telephone line construction, showing pipe line from furnace in hotel to automatic telephone switchboard house, a radiator has been installed in the switchboard house for heating it, 1940
Mammoth Cave National Park; National Park Service
Portrait, Hub Gore, Assistant Ferry Operator at Mammoth Cave, 1940
Mammoth Cave National Park; National Park Service
National Park Service warehouse under construction, 1940
Mammoth Cave National Park; National Park Service
Fire protection, Mammoth Cave employees receiving fire fighting instructions from a captain of Louisville fire department, 1940
Mammoth Cave National Park; National Park Service
Landscaping, looking towards Frozen Niagara entrance showing shrubbery, 1940
Mammoth Cave National Park; National Park Service
Completed parking lot at Frozen Niagara hotel, 1940
Mammoth Cave National Park; National Park Service
Construction, beginning of Lick Log Road by camp NP-1, 1940
Mammoth Cave National Park; National Park Service
Column in unidentified area of cave
Mammoth Cave National Park; National Park Service
People eating in Mammoth Cave Hotel dining room
Mammoth Cave National Park; National Park Service
Hotel coffee shop full of diners
Mammoth Cave National Park; National Park Service
People swimming and boating on Green River, 1940
Mammoth Cave National Park; National Park Service
Five generations, 1940 homecoming, Mammoth Cave National Park
Mammoth Cave National Park; National Park Service
WGRC radio broadcasts from Echo River
Mammoth Cave National Park; National Park Service
Young man holding up dead rattlesnake
Mammoth Cave National Park; National Park Service
Construction, state highway equipment laying an asphalt course on road near Mammoth Cave Hotel, 1940
Mammoth Cave National Park; National Park Service
Cars parked in front of Frozen Niagara Hotel, Labor Day, 1940
Mammoth Cave National Park; National Park Service
Construction, enlarging Katy Pace quarry, 1940
Mammoth Cave National Park; National Park Service
Fire station construction, Maple Springs
Mammoth Cave National Park; National Park Service
Springhouse on unidentified hillside
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, soldiers in chow line
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, group of G.I.s posed on motorcycles
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, soldiers pitching tents in Freeman Field
Mammoth Cave National Park; National Park Service
Imhoff tank construction, 1941
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, soldiers pitching tents
Mammoth Cave National Park; National Park Service
Construction, enrollees watering and rolling cabin parking lot, 1941
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, half tracks parked in rear of Mammoth Cave Hotel
Mammoth Cave National Park; National Park Service
Army activities at Mammoth Cave, army unit preparing for bivouac in Freeman Field
Mammoth Cave National Park; National Park Service
Portrait, Warden W.O. Blanton Jr.
Mammoth Cave National Park; National Park Service
Cave, Kate Schwarz, hostess, going downstairs to Snowball Dining Room, Carmichael Entrance, 1941
Mammoth Cave National Park; National Park Service
Cave, trail construction, New Discovery, 1942
Mammoth Cave National Park; National Park Service
Disabled Vets meeting in amphitheater
Mammoth Cave National Park; National Park Service
Museum collection, artifacts (large points) from the Nelson collection, 1942
Mammoth Cave National Park; National Park Service
Looking up Green River from Mammoth Cave Ferry, 1944
Mammoth Cave National Park; National Park Service
Soil and moisture work, field being plowed, 1945
Mammoth Cave National Park; National Park Service
Needed maintenance in cave, showing three stalls of bathrooms
Mammoth Cave National Park; National Park Service
Soil and moisture after treatment, 1946
Mammoth Cave National Park; National Park Service
Soil and moisture after treatment, 1946
Mammoth Cave National Park; National Park Service
Cave, visitors enter the Historic Entrance, 1946
Mammoth Cave National Park; National Park Service
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