O. E. Jackson

13 public-domain plates in the archive

• Bombus (Pyrobombus) frigidus 24 Jul 1916
• Bombus (Bombus) occidentalis 11 Aug 1917
• Bombus (Bombus) nevadensis 28 May 1916
• Bombus (Fervidobombus) californicus 28 Jun 1914
• Bombus (Bombus) occidentalis 22 Aug 1914
• Bombus (Pyrobombus) bifarius 22 Aug 1915
• Bombus (Pyrobombus) frigidus 19 Jul 1916
• Bombus (Subterraneobombus) appositus 23 Jul 1914
• Bombus (Cullumanobombus) rufocinctus 22 Aug 1915
• Bombus (Subterraneobombus) appositus 7 Jul 1914
• Bombus (Subterraneobombus) appositus 22 Aug 1915
• Bombus (Fraternobombus) fraternus 21 Jun 1914
• Bombus (Alpinobombus) balteatus 24 Jul 1916