Circular / United States Department of the Interior, U.S. Fish and Wildlife Service.

no.1-15 1941-48; no.16-23 1950-1953; no.26-40 1954-56; no.43 1956; no.47 1957; no.48 1957; no.51 1958; no.52 1958; no.53 1958; no.54 1959; no.56 1959; no.58 1959; no.61 1959; no.63 1959; no.65-66 1959; no.77 1959; no.64 1960; no.78 1960; no.82 1960; no.84 (Revised) 1960; no.84 1960; no.85 1960; no.86 1960; no.88-90 1960; no.91 1960; no.93 1960; no.94 1960; no.95 1960; no.96 1960; no.98 1960; no.104 1961; no.107 1961; no.108 1961; no.109 1961; no.110 1961; no.115 1961; no.116 1961; no.119 1961; no.121 1961; no.123 1961; no.124 1961; no.133 1961; no.130 1962; no.136 1962; no.138 1962; no.139 1962; no.140 1962; no.143 1962; no.144 1962; no.146 1962; no.152 1962; no.156 1962; no.161 1962; no.141 1963; no.147 1963; no.148 1963; no.149 1963; no.151 1963; no.154 1963; no.159 1963; no.160 1963; no.166 1963; no.167 1963; no.111 (Revised) 1964; no.177 1964; no.179 1964; no.184 1964; no.185-186 1964; no.187 1964; no.188 1964; no.191 1964; no.192 1964; no.193 1964; no.195 1964; no.196 1964; no.198 1964; no.199 1964; no.200 1964; no.202 1964; no.204 1965; no.205 1965; no.206 1965; no.207 1965; no.208 1965; no.211 1965; no.212 1965; no.213 1965; no.215 1965; no.217 1965; no.218 1965; no.220 1965; no.221 1965; no.226 1965; no.228 1965; no.230-239 1965-1966; no.162 1966; no.243 1966; no.321 1969; no.323 1969; no.325 1969; no.327 1969; no.328 1969; no.334 1969; no.350 1969; no.331 1970; no.337 1970; no.16 Revised 1979; no.16 1979; v.4; v.5; v.19; v.20; v.21; v.23; v.24; v.26-30; v.32; v.33; v.34; v.35; v.36; v.37; v.39; v.46; v.48; v.51; v.54; v.58; v.59; v.62; v.64; v.65; v.80; v.83; v.87; v.92; v.97; v.99; v.107; v.108; v.109; v.110; v.111; v.119; v.120; v.121; v.128; v.129; v.135; v.137; v.140; v.143; v.144; v.145; v.146; v.149; v.161; v.162; v.165; v.166; v.168; v.169; v.170; v.172; v.179; v.180-184; v.186; v.187; v.188; v.193; v.198; v.200; v.202; v.204; v.205; v.206; v.211; v.212; v.215; v.217; v.220; v.221; v.223; v.224; v.226; v.228; v.230-238; v.239-254; v.256; v.260-275; v.276-290; v.292-311; v.313-320; v.322-329; v.331