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ID: 311310p
Section of Sair Usu trail, Mongolia, 1926
ID: 311311p
ID: 311312p
Sair Usu and Kobdo Kalgan trail, Mongolia, 1926
ID: 311313p
Section of Kobdo Kalgan trail, 1926
ID: 311500p
Chart illustrating continental uplift of North America and Mongolia, 1926
ID: 311501p
Continental sediments of Mongolia, Granger, Berkey, Osborn, 1926
ID: 311563
Map of Central Asiatic Expeditions, Mongolia, 1926
ID: 311598p
Map of Mongolia, 1926
ID: 265347
Albert Thomson and Chinese men covering bones of "Baron Sog monster" with burlap and flour paste, Mongolia, 1928
ID: 411042
Roy Chapman Andrews with guide scanning desert for trails leading east, Mongolia, 1928
ID: 411042a
Roy Chapman Andrews with guide and camel, scanning desert for trails leading east, Mongolia, 1928
ID: 410929
Expedition staff in the field, Mongolia, 1928
ID: 410931
Members of Third Asiatic Expedition listening to Victrola outside tent, Mongolia, 1928
ID: 410932
ID: 410905
Outside the wall of Wan Chuan Hsien, Roy Chapman Andrews with MacMurray, colonel of the Chinese cavalry, and aide, escorted out of Kalgan, 1928
ID: 410934
Roy Chapman Andrews holding baby antelope caught by J. McKenzie Young, Mongolia, 1928
ID: 410936
Expedition cooks and table boys with bread and chocolate and coconut cake baked in gasoline tin oven, Mongolia, 1928
ID: 410937
Tserin, camel leader of 125 camels in the expedition caravan, Mongolia, 1928
ID: 410904
On the way from Kalgan up to the Pass, near Wan Chuan Hsien, Mongolia, 1928
ID: 410911
Cars at the top of Kalgan Pass, Mongolia, 1928
ID: 410941
Goptchil-in-Sumu, a Mongol temple or lamasery on the southern edge of the Gobi Desert, Mongolia, 1928
ID: 410943
Baron Sog, a lamasery on the southern edge of the Gobi Desert, Mongolia, 1928
ID: 410948
Motor cars enroute near Pang Kiang, Mongolia, 1928
ID: 410949
Motor cars en route near Pang Kiang, Mongolia, 1928
ID: 410950
ID: 410951
Automobiles in sand and lake region of Hul Tsagan Nor, Mongolia, 1928
ID: 410955
Automobiles stopped near a Chinese walled city to cool motors, enroute from Kalgan to Peking, China, 1928
ID: 410960
Roy Chapman Andrews and Tserin go out to meet the camels, Mongolia, 1928
ID: 410961
First view of camel caravan at Shireh Usu, Mongolia, 1928
ID: 410962
Camel caravan of 125 carrying food and equipment, arriving at Shireh Usu or Chimney Butte Camp, Mongolia, 1928
ID: 410990
Roy Chapman Andrews watching William P. T. Hill map Urtyn Obo badlands, Mongolia, 1928
ID: 410995
Looking into the valley at deepest portion of Baron Sog strata on red beds at Urtyn Obo, Mongolia, 1928
ID: 410988
Erosion in a gully at Urtyn Obo, Roy Chapman Andrews next to eagle's nest, Mongolia, 1928
ID: 410994
Deepest portion of the Baron Sog strata on the red beds at Urtyn Obo, Mongolia, 1928
ID: 411005
Quarry of "Monster" bones, showing rib bone, lower jaw, humerus, femur, toe bone, Mongolia, 1928
ID: 411008
Walter Granger taking out skull of Titanothereum, lower white beds at Urtyn Obo, Mongolia, 1928
ID: 411009
Showing Titanothereum in lower white beds at Urtyn Obo, Mongolia, 1928
ID: 411013
Where dinosuar eggs were found at Erhlien near Boro in Sumu, Mongolia, 1928
ID: 411014
Roy Chapman Andrews and Walter Granger taking out dinosaur eggs at Erhlien, Mongolia, 1928
ID: 411030
Hill wrapping badlands at Urtyn Obo, Roy Chapman Andrews at right and Dr. Jose A. Perez at center, Mongolia, 1928
ID: 411040
Roy Chapman Andrews and Walter Granger explain Eveready flashlight to Mongol water carrier at Chilian Hotoga, Mongolia, 1928
ID: 411043
Roy Chapman Andrews, alongside a camel, scans the desert with binoculars for trails to the east, Mongolia, 1928
ID: 411044
Roy Chapman Andrews looking through binoculars, Mongolia, 1928
ID: 411045
Andrews and Tserin taking fresh radio batteries from caravan, Mongolia, 1928
ID: 411046
Andrews refills flashlights at each meeting with the caravan, Mongolia, 1928
ID: 411048
Giving Mongol women of Hat-in-Sumu a concert on electric victrola, Mongolia, 1928
ID: 411057
J. McKenzie Young distilling water for the radio and motor car batteries, Mongolia, 1928
ID: 411065
Obo at Nom Khong or Sacred Mesa, Mongolia, 1928
ID: 411076
Camp and camel boxes at Urtyn Obo, Mongolia, 1928
ID: 411077
ID: 410981
Dune Dwellers implements found just south of Baron Sog, Mongolia, 1928
ID: 410926
Roy Chapman Andrews at elephant camp in the Gur-Tung-Khara region, Mongolia, 1928
ID: 410906
Members of the expedition at Chang Pei Hsien, first night's stopping place after leaving Kalgan, Mongolia, 1928
ID: 410902
ID: 410927
Roy Chapman Andrews, leader of Central Asiatic Expedition, 1928
ID: 411310
ID: 410903
ID: 410910
The American Minister's party and members of the expedition at Chang Pei Hsien, on the plateau above the pass, first night's stopping place after leaving Kalgan, Mongolia, 1928
ID: 410933
Roy Chapman Andrews feeding two pet eagles in camp at Turtyn Albo, Mongolia, 1928
ID: 410963
Alonzo W. Pond explaining to Roy Chapman Andrews the stone Dune Dweller implements found just South of Baron Sog in the Shara Muren region, Mongolia, 1928
ID: 411019
Buckshot, Lu Taling, Walter Granger, and Albert Thomson (left to right) packing fossils at Hospital Camp (Dar Ser Hai), Mongolia, 1928
ID: 411083
Roy Chapman Andrews in the badlands of Urtyn Obo, Mongolia, 1928
ID: 411020
Elephant camp and the environs of the Gur Tung Khara region, Mongolia, 1928
ID: 265364
Erosion of sandstone cliffs, Ungur Tsagan Nor, Mongolia, 1928
ID: 265365
ID: 410930
Staff of the Central Asiatic Expedition in the field, Mongolia, 1928
ID: 410984
Eocene bad lands, Urtyn Obo, Mongolia, 1928
ID: 410986
Well defined bit of erosion in a gully about four miles east of Camp Baluch at Urtyn Obo, showing Baron Sog above the red beds, Mongolia, 1928
ID: 410987
Andrews at the eagle's nest, Mongolia, 1928
ID: 410989
Dr. Berg in the Bad lands, Urtyn Obo, Mongolia, 1928
ID: 410991
Looking east from expedition camp, Urtyn Obo, Mongolia, 1928
ID: 410992
Tserin, head camel man of the expedition, Urtyn Obo, Mongolia, 1928
ID: 410993
Deepest part of Baron Sog strata, Urtyn Obo, Mongolia, 1928
ID: 410996
Canyon, 4 miles east of Camp Baluch, Urtyn Obo, Mongolia, 1928
ID: 410997
Roy Chapman Andrews looking at the white bad lands, one mile northwest of camp, Urtyn Obo, Mongolia, 1928
ID: 410998
Showing the depth of the Baron Sog strata above the red beds at Urtyn Obo, Mongolia, 1928
ID: 411029
Bad lands at Shireh Usu (Chimney Butte), Mongolia, 1928
ID: 411053
Listening to time signals sent from a radio station in Manila, at expedition camp, Mongolia, 1928
ID: 411054
Listening to time signals sent from a radio station in Manila at expedition camp, Mongolia, 1928
ID: 411055
Captain William P.T. Hill and Walter Granger determining location by the sun, Mongolia, 1928
ID: ptc-5494
Roy Chapman Andrews and William P. T. Hill mapping Badlands, Mongolia, Central Asiatic Expedition, 1928
ID: ls4-54
ID: 265280
A Mongol maps out the best trails for the expedition, Mongolia, 1928
ID: 411060
A halt for luncheon on the way to Ula Usu, near the Mongol temple, Mongolia, 1928
ID: 411025
How erosion starts at the beginning of the badlands, Mongolia, 1928
ID: 410912
Party at the top of Kalgan Pass, Mongolia, April 16, 1928
ID: 411309
Roy Chapman Andrews, Mongolia, about 1928
ID: 108772
Map of physiographic provinces of Mongolia, 1929
ID: ls4-23
Roy Chapman Andrews, Albert Thomson, and Walter Granger with fossils on the floor of the laboratory, Peking headquarters, 1930, (original negative by Mr. Timperley of Manchester Guardian)
ID: 116825
Dr. Andrews and camel, wolf camp, Mongolia, 1930
ID: 274528
ID: 116818
Wolf camp, looking northeast, Mongolia, 1930
ID: 116819
Wolf expedition camp, looking northeast, Mongolia, 1930
ID: 116854
Margetts expedition camp, looking southeast, Mongolia, 1930
ID: 116855
Camp Margetts, showing escarpment just east of camp, Mongolia, 1930
ID: 274459
Urteu Oba, showing contact between Ulau Tochu beds and Baron Sog beds, Mongolia, 1930
ID: 274460
Urteu Oba badlands, looking east from 1928 expedition camp, showing contact between Ulau Gochu beds and Baron Sog beds, Mongolia, 1930
ID: 274461
Urteu Oba looking northwest from 1928 camp, showing contact between Ulau Gochu beds and Baron Sog beds, Mongolia, 1930
ID: 313485
Outline map of Mongolia, 1931
ID: 286231
Dr. Roy Chapman Andrews, F. Trubee Davison, Dr. William K. Gregory, and Dr. Walter Granger beside relief model of Baluchitherium, Hall of Mongolian Vertebrates, 1936