Two hardcover engineering books, one titled TABLES AND DIAGRAMS OF THE THERMAL PROPERTIES OF SATURATED AND SUPERHEATED STEAM by Lionel Marks, Professor of Mechanical Engineering, Harvard University, and Harvey Davis, Assistant Professor of Physics, Harvard University, 1913, 106 pages.
The second book is titled THERMODYNAMIC CHARTS STEAM, WATER, AMMONIA, "FREON-12," and Mixtures of Air and Water Vapor, and also Special Tables for Turbine Calculations by Frank Ellenwood and Charles O. Mackey, 1947, Second Edition. 46 pages. Both vintage books are in VG+ condition. Pages are clean and intact, and the bindings are tight. Previous owner's name written inside front covers. Both would make a great addition to your library!