whether the building constructed by thomas herbert in 1822 is this structure joined to the back of decatur house remains an open question, and it's under active investigation. i'll talk about that a little bit. this is the south elevation of that building, which faces an interior court yard. well, susan and steven decatur did not register as slave owners in washington, d.c. we know there were enslaiched men, women, and children living on the property by the late 1820s in the household of secretary of state henry clay, who was renting the property from susan decatur. a woman named charlotte du pea, enslaved in the household, sued him for her freedom and that of her children charles and mary ann in 1829. while the case was being decided and the court eventually ruled against her, she remained in the decatur house with its next ok pant, then secretary of state martin van buren, as evidenced by this letter. the 1830 federal census counted four enslaved female and two colored free females in the van buren household, some of all of whom could have been living in the slave quarters. now, in 1837,