Harriet and Thomas Truesdell House 227 Duffield Street dates from the mid-19th century, was home to the Truesdells from 1851 – 1863, and is the home where Harriet died in 1862. The Truesdells were intimately involved in the American Abolitionist movement, befriending such luminaries as Ralph Waldo Emerson and William Lloyd Garrison. The Truesdells were associated with the house until the 1920s. The history of slavery in Brooklyn and New York City is a field which is still very much emerging. More research needs to be done and much more information needs to be incorporated into the accepted canon of history. As preservationists and historians, we should be doing everything possible to save and record the stories, records and artifacts of that time before they are lost. 227 Duffield Street was designated as an Individual Landmark on February 2, 2021. As much of early American life took place in the domestic realm, especially the organizing and formulation of controversial reform movements such as Abolitionism, the designation of a site of conscience such as 227 Duffield Street as an individual New York City landmark helps grant protection to a building which will only grow in importance and significance as our understanding of history expands.