BioStor
 | Collecting in the Far North. I.—The Alaskan Coast. Henry Wickham (1892) Entomological News, Philadelphia 3(6): 139-143 |
 | List of the Coleoptera of southern California with notes on habits and descriptions of new species Fall Henry Clinton (1901) Occasional Papers of the California Academy of Sciences, San Francisco 8: 1-282 |
 | Notes on Coccinellidæ Charles W Leng (1903) Journal of The New York Entomological Society 11: 35-45 |
 | Notes on the North American Species of Hippodamia (Coleoptera) P H Timberlake (1919) Journal of The New York Entomological Society 27: 162-174 |
 | Additional records of Coleoptera collected at the Nevada test site Mercury, Nevada V Tanner (1974) The Great Basin Naturalist 34: 218-220 |