Notes: 3 sheets in pencil, ink and watercolor on transparent and (tracing) paper, dated Dec. 9, 1879 and March 12, 1880, signed by Paris Isaac. On sheet 208: a copy of this drawing was sent on Feb. 14, 1881, the skylights were changed and ordered according to drawing no. 456 from Paris Isaac on Feb. 14, 1881, [dispatch date: 30-10-1879, supervisor: Beirer, scale 1 in 50].