found: King, N. Map of that part of the city of Washington shewing the situation of the mansion house ... 1796:map recto (Mr. Notley Young, original proprietor)
found: United States. Congress (7th, 1st session : 1801-1802). House. Report on the petition of sundry inhabitants of the city of Washington and the District of Columbia ... 9th February, 1802, 1802:p. 6, etc. (Notley Young)
found: Peden, H. Revolutionary patriots of Prince George's County, Maryland, 1997:p. 347 (Notley Young (1738-1802); baptized Sept. 24 1738, Prince George's Parish, son of Benjamin and Ann Young; served as court justice, 1777)
found: America's Historical Newspapers, via WWW, Nov. 30, 2010:New-York gazette, 3-31-02 (Notley Young, Esq.; d. suddenly at Washington)
found: FamilySearch, via WWW, Nov. 30, 2010(Notley Young; b. 24 Sep 1738, Prince George's, Md.; d. 23 Mar. 1802, Washington, D.C.)
found: MWA/NAIP files, Nov. 30, 2010(hdg.: Young, Notley; note: do not confuse with his son, Notley Young (1766-1820), a priest)