Lot of 3 International Library of Technology #139,274,309 1921-1925 Antique HC

Item Details:

• Title: #139 Planers, Shapers, Milling Machines, Gear Cutting, Grinding, Toolmaking. Published in 1921 by International Textbook Company with an unstated edition.
• Title: #274 Mathematics, Mechanics, Hydrostatics, Pneumatics, Measuring Instruments. Published in 1922 by International Textbook Company with an unstated edition.
• Title: #309 Pipe Fitting, Steam Heating, Pipe Systems. Published in 1925 by International Textbook Company with an unstated edition.

Condition:

• These books are in acceptable condition. The top of the text block has moderate soiling.
• The pages are clean, free of writing and stains, but have yellowed slightly due to age.
• Due to the sprayed edges and the age of the books, some color has run onto the pages, but it doesn't affect readability.
• The bindings of all books are loose, and the pages are stiff.

These antique books are great for collectors or those interested in old - school technology knowledge. To use them, simply open the pages and start reading. When handling these books, be gentle because the bindings are loose and the pages are stiff. Avoid touching the pages with dirty hands to keep them clean. To maintain them, store them in a dry and cool place away from direct sunlight. This will help prevent further yellowing and damage to the pages. If you notice any loose pages, you can use acid - free tape to gently re - attach them, but be very careful not to damage the old paper.