BioMap: Guiding Land Conservation for Biodiversity in Massachusetts
Westborough, MA: Natural Heritage &Endangered Species Program, MA Division of Fisheries & Wildlife, 2001. A guide to the Biomap project: an effort to identify and map areas of crucial biological concern, which are based on endangered species information and the biological conservation needs in Massachusetts.

BioMap Technical Report, A supplement to BioMap: Guiding Land Conservation for Biodiversity in Massachusetts
Westborough, MA: Natural Heritage & Endangered Species Program, MA Division of Fisheries & Wildlife, June 2001. A detailed explanation of the BioMap Project's methods, additional results, and an expanded bibliography.

Our Irreplaceable Heritage: Protecting Biodiversity In Massachusetts
Westborough, MA: Massachusetts Chapter of The Nature Conservancy & Natural Heritage Endangered Species Program, MA Division of Fisheries & Wildlife, 1998. A call to action and prescription for biodiversity conservation in Massachusetts.