I SHALL BE LISTING A LARGE NUMBER OF OLD BOOKS AND CATALOGS COVERING WIRELESS AND TELEGARPHY, SCIENTIFIC AND MEDICAL INSTRUMENTS AND OTHE ROLD BOOKS OF SCIENTIFIC AND TECHNICAL INTEREST.
LARGE SIZE HARD BACK CATALOG ( MEASURES 8X11 INCHES) AND OF 210 PAGES. THIS IS THE Mc GRAW HILL RADIO TRADE CATALOG AND IS DESCRIBED AS - A CONSOLIDATION OF CONDENSED CATALOGS OF RADIO AND ALLIED PRODUCTS WITH A COMPLETE CLASSIFIED DIRECTORY OF THE AMERICAN MANUFACTURERS OF EVERYTHING USED IN THE CONSTRUCTION , MAINTENANCE AND OPERATION OF RADIO APPARATUS BOTH TRANSMITTING AND RECEIVING. THIS CONSISTS OF SEVERAL SECTIONS - LIST OF MANUFACTURERS CATALOGED, MANUFACTURERS CATALOGS , AND FINALLY A COMPLETE CLASSIFIED DIRECTORY OF MANUFACTURERS. THIS LAST SECTION IS A VERY USEFUL REFERENCE ITEM AS FOR EXAMPLE YOU LOOK UP SPARK GAPS OR TELEGRAPH KEYS AND IT LISTS ALL THE MAKERS/ SUPPLIERS OF SPARK GAPS OR TELEGARPH KEYS ( ALTHOUGH EXAMPLES MAY NOT BE SHOWN IN THE CATALOG).