Library of Congress, HABS DC,WAS,28--11
Decatur House, Jackson Place, Washington DC
(a) Slave Quarters
Felling dates: Summer 1817, Winter 1820/1
(a) Floor joists (1/9) 1808; Struts (0/2); Studs (1/2) 1820 (C);
Rafters (2/4) 1820 (C); Ceiling joists (2/3) 1810, 1816 (1/2C). Site
Master 1713-1820 (pine) DTRx1 (t = 7.10 SUNAx1; 6.66 VAPINE; 6.16
structure comprising the Slave Quarters at Decatur House is a
two-story building located behind the main house.
Dendrochronological analysis has shown that the original four-bay
structure was built in the winter of 1820/1 or shortly thereafter.
Worthington, M J and Seiter, J I 2012 The Tree-Ring Dating of
the Slave Quarters at Decatur House, Jackson Place, Washington DC
unpublished Oxford Tree-Ring Laboratory archive report 2012/05.