wakman.J MAINE MAP, GEOLOGIC. 188 
Map, geologic, of Colorado, Spanish Peaks quadrangle; historical, igneous, 
ec< >nomic, and structural geology GF 71 
of Connecticut, Trumbull mine, vicinity of Ann 22, n, p 14 
Trumbull Township, tungsten mine near Long Hill _ . \nn 22, n, p 13 
of Dakota formation catchment area and Dakota artesian basin WS 67, p 57 
of Erie and Ohio basins Mon x li, p 50 
of Georgia, Rome quadrangle GF 78 
of Idaho, Nez Perce region WS 53, p 16 
Snake River Plains Bull 199, p 13 
of Illinois, Calumet quadrangle GF 81 
Calumet River, vicinity of GF 81, p 11 
Chicago quadrangle GF 81 
coal field Ann 22, in, p 272 
Desplaines quadrangle GF 81 
Lake Chicago (glacial) GF 81, pp 8, 9, 10 
Riverside quadrangle GF 81 
. of Indian Territory Bull 211, p 62 
Atoka quadrangle, showing historical, economic, and structural 
geology GF 79 
Coalgate quadrangle, historical, economic, and structural geology GF 74 
coal field Vim 22, in, pp 374, 378 
northern, sh< wing oil and gas fields Bull 1 84, p 16 
of Indiana, Calumet quadrangle GF 81 
coal field Ann 22, in, p 272 
Ditney quadrangle GF 84 
Ditney quadrangle and vicinity, showing pre-Pleistocene drainage. .GF 84, p 6 
eastern (glacial) Mon xli, pp 50, 304, 710, 714, 740, 758 
of Iowa, coal field Ann 22, in, p 340 
of Kansas, coal field Ann 22, in, | > 340 
eastern, showing oil and gas fields Bull 1 84, p 16 
southeastern Bull 211, p 28 
of Kentucky, coal field Ann 22, in, pp 234, 272 
drainage modifications in parts of Ohio and PP 13, p 74 
northern (glacial) ... Mon xli, pp 50, 710, 714, 740, 758 
of Lake Superior region, showing pre-Cambrian and other rocks. .Mon xlv, p 32 
of Louisiana Bull 184, p 38; Bull 212, pi i 
of Michigan, coal basin Ann 22, in, p 314 
lower (glacial) Mon xli, pp 50, 710, 714, 740, 758 
lower peninsula Ann 22, in, p 642 
showing marl beds and cement factories Ann 22, in, p 648 
of Minnesota, Mesabi district Mon xliii, pocket 
Mesabi district, Archean and Huronian Mon xliii, pp 66, 70, 73 
Keweenawan and Huronian Mon xliii, p 80 
Vermilion district Mon xlv, p 34, atlas sheets xi-xxvi 
showing Vermilion moraine Mon xlv, p 427 
of Missouri, coal field Ann 22, in, p 340 
Ozark region Ann 22, n, pocket 
showing physiographic features Ann 22, n, p 70 
of Montana, coal fields Ann 22, in, p 424 
Elkhorn district Ann 22, n, pp 420, 444, 448 
of Nebraska, Camp Clarke quadrangle GF 87 
coal field Ann 22, in, p 340 
Scotts Bluff quadrangle GF 88 
western WS 70, pp 14, 16 
