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Eleventh Floor Plan (77M), undated, revised 7/13/1928

Ventilation Plan of Thirteenth and Fourteenth Floors of Pent House (105M), 4/9/1928, revised 8/27/1928

Ventilating Unit Schedule (108M), 7/15/1928

24-1/4x31 inches

Proposed Method of Pipe Identification (111M), 5/21/1928

13-1/2x20 inches

Mechanical Drawings (cont)

Ink-on-linen drawings with pencil notations, 29-1/2x40-1/4 to 30-1/4x40-1/2 inches

Plan at Twenty-Third Floor (Preliminary) (114M), 6/9/1928, revised 6/25/1928

Plan at Twenty-Fourth Floor (Preliminary) (115M), 6/9/1928, revised 8/1/1928

Plan at Twenty-Fifth Floor (Preliminary) (116M), 6/9/1928, revised 9/29/1928

Plan at Twenty-Sixth Floor (Preliminary) (117M), 6/9/1928, revised 7/1/1928

Plan at Twenty-Seventh Floor (Preliminary) (118M), 6/9/1928, revised 7/1/1928