Results

Checklist of the Coleoptera of America north of Mexico.

The ferns of North America. Colored figures and descriptions, with synonymy and geographical distribution of the ferns (including the Ophioglossaceae) of the United States of North America and the british North American possesions.

Key to North American birds.

The structure and habits of spiders

The geographical distribution of animals and plants

The flora of Essex County, Massachusetts

Bulletin Essex Institute

Proceedings Essex Institute

Memoirs Peabody Academy of Sciences