A survey of mammals (excluding bats) at Thomas Stone National Historic Site (THST) was conducted from 2002 to 2003 to document the presence of > 90% of the mammals in the park, describe species distributions, relative abundances, and habitat-specific richness, and provide recommendations for management and conservation. Surveys relied on live trapping with Sherman and Tomahawk traps for small to medium-size mammals, the use of pitfall traps to capture small shrews, direct observation of individuals and their sign (tracks, scats), and remote photography. We identified two principal habitats - grassland (fields) and deciduous forest - and less expansive tracts of mixed deciduous-coniferous forest, wind-disturbed deciduous forest, and additional targeted locations for sampling.