The Appalachian folds of central Pennsylvania

[1] BAILEY W, 1891, 13 US GEOL SURV 2, P211

[2] BECKER GF, 1893, GEOL SOC AM BULL, V4, P50

[3] BRICEVILLE, TENN FOLIA

[4] CAMPBELL MR, MASONVILLE UNIONVILL

[5] CHAMBERLIN, GEOLOGY, V3, P7

[6] CLAYPOLE FW, 1885, AM NAT, V19, P257

[7] DAUBREE A, ETUDES SYNTHETIQUES, P316

[8] DAVIS WM, 1889, NAT GEOG MAG, V1, P196

[9] HOSKINS LM, 1894, 16 US GEOL SURV 1, P865

[10] LEITH CK, 1905, B US GEOL SURV, V239, P121

[1] BAILEY W, 1891, 13 US GEOL SURV 2, P211

[2] BECKER GF, 1893, GEOL SOC AM BULL, V4, P50

[3] BRICEVILLE, TENN FOLIA

[4] CAMPBELL MR, MASONVILLE UNIONVILL

[5] CHAMBERLIN, GEOLOGY, V3, P7

[6] CLAYPOLE FW, 1885, AM NAT, V19, P257

[7] DAUBREE A, ETUDES SYNTHETIQUES, P316

[8] DAVIS WM, 1889, NAT GEOG MAG, V1, P196

[9] HOSKINS LM, 1894, 16 US GEOL SURV 1, P865

[10] LEITH CK, 1905, B US GEOL SURV, V239, P121