1915 (March - July)
Greasewood and grass, March 3, 1915
Cultivated fields, March 1, 1915
Juniper, etc., March 3, 1915
Juniper, etc., March 3, 1915
Juniper, etc., March 3, 1915
Cedar, etc., March 3, 1915
Valley, March 3, 1915
Typical, March 3, 1915
Grass and Gutierrezia, March 3, 1915
Grass, March 3, 1915
Covillea, March 4, 1915
Covillea, March 4, 1915
Covillea, March 4, 1915
Chaperal, March 4, 1915
Covillea, March 4, 1915
Allenrolfea, March 10, 1915
Covillea, March 10, 1915
Covillea, sand primrose, March 10, 1915
Ocotillo, etc., March 10, 1915
Covillea, [Carnegiea] gigantea, Plantago, March 13, 1915
Cactus, Encelia, Gilia, March 13, 1915
Conglomerate, Cactus, Wash., etc., March 13, 1915
Ironwood, Piemeisel, March 13, 1915
Covillea, Gaertneria, Festuca, March 13, 1915
Ironwood, Opuntia, Covillea, March 13, 1915
Cactus, Lupine, etc., March 14, 1915
Alfalfa, Carnegiea, gigantea, March 14, 1915
Alfalfa, Atriplex, Mesquite, March 14, 1915
Plantago, Lotus, Geranium, March 15, 1915
Covillea, Ironwood, Plantago, March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Covillea, Ephemerals, Plantago, March 15, 1915
Covillea, Plantago, March 15, 1915
Carnegiea, Opuntia, Gaertneria, March 15, 1915
Opuntia, March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Panorama, Gaertneria, Ambrosia, Opuntia, etc., March 15, 1915
Atriplex canescens, Festuca, March 16, 1915
Atriplex polycarpa, Mesquite, March 16, 1915
Martin sampling Atriplex, etc., March 16, 1915
Indian House, March 17, 1915
Atriplex polycarpa, Opuntia, March 17, 1915
Atriplex, Covillea, Opuntia, March 17, 1915
Covillea, March 18, 1915
Covillea area, March 18, 1915
Covillea, Palo verde, March 18, 1915
Succession on corn land, March 18, 1915
Detail Ephemerals. Plantago etc, March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Panorama, valley farms, Mts., irrigation, and veg., March 18, 1915
Succession No. of town, March 19, 1915
Succession No. of town, March 19, 1915
Cattle farm, March 19, 1915
Ostrich farm, March 19, 1915
Yucca, grassm Ephedra, March 20, 1915
Bluffs, Covillea flat, March 20, 1915
East, March 20, 1915
Yucca and grass, March 20, 1915
Grass, March 20, 1915
East, March 20, 1915
East, March 20, 1915
North, alternation, March 20, 1915
Great Covillea area, March 20, 1915
Covillea and grass alternation, March 20, 1915
Cattle country, March 20, 1915
Shad on hills, S.P. west, May 29, 1915
Flat free of veg., Mts. in back, May 29, 1915
Sand dunes, cottonwoods, willow, June 5, 1915
Mts. and trees, river, June 5, 1915
River and mountains, June 5, 1915
First trek on Columbia River, June 5, 1915
Cascade Locks and Rapids, June 5, 1915
Rock slides across Columbia R., June 5, 1915
Dunes, fire on isle in River, June 5, 1915
Short grass, June 16, 1915
Succession, short grass, June 16, 1915
Short grass, Festuca, Plantago, June 16, 1915
Ranch, June 16, 1915
NE Yuma, Roads, veg., June 21, 1915
Short grass, breakin veg., June 21, 1915
Tree claim, June 21, 1915
Bromus inermis and native, June 21, 1915
Elm and ash, walnut, June 21, 1915
Erigeron canus, June 23, 1915
Snow fence, Psoralea, Chrysopsis, June 25, 1915
Short grass and Plantago, June 28, 1915
Roads, June 30, 1915
Roads, June 30, 1915
Snow bank effect, short grass, July 11, 1915