The Xerces Society has produced Conserving Bumble bees: Guidelines for Creating and Managing Habitat for America’s Declining Pollinators.
PDF copies are available for free download at The Xerces Society.
The Pollinator Partnership has also developed a poster of the Bumble Bees of the Eastern United States. The poster depicts the 21 species that occur east of the Great Plains. Posters are available for purchase from The Pollinator Partnership.