Ventilating Ducts - Madison Ave. Wing at Cols. 209 & 210 [Lincoln Building construction.]
Heating Ducts - Subway Arcade Level at Cols. 51 & 52 [Lincoln Building construction.]
Madison Ave. Side [Lincoln Building construction.]
Madison Ave. Elevation [Lincoln Building construction.]
42nd Elevation [Lincoln Building construction.]
42nd St. Side [Lincoln Building construction.]
42nd St. Elevation [Lincoln Building construction.]
Lincoln Building construction [42nd Street side.]