Bulletin of the Pennsylvania Museum

v.3:no.12(1905), v.4:no.15-16(1906), v.5:no.20(1907), v.6:no.23(1907), v.7:no.25-26(1908-1909), v.8:no.31(1909), v.10:no.40(1912)-v.11:no.42(1913), v.12:no.47-49(1914-1915), v.13:no.51(1915), v.14:no.53-56(1916), v.14:no.59(1917)-v.17:no.65(1919-1920), v.17:no.71(1922)-v.18:no.73(1923), v.18:no.76(1923), v.19:no.81(1923), v.19:no.84-85(1924), v.20:no.88-90(1924), v.20:no.92(1925), v.20:no.95(1925), v.21:no.101(1926), v.21:no.103(1926), v.22:no.107(1926), v.22:no.109(1927)-v.23:no.118(1928), v.23:no.120(1928), v.24:no.122(1928)-v.26:no.137(1930), v.26:no.139(1931), v.26:no.142:pt.2(1931), v.27:no.148(1932), v.28:no.151(1932), v.28:no.153(1933), v.29:no.157(1933), v.29:no.159(1934), v.29:no.162-163(1934), v.30:no.165-167(1934-1935), v.31:no.169(1936)-v.32:no.174(1937), v.33:no.177(1938)