A collection of seven engineering and physics textbooks in a cardboard box. Titles include 'Electronic Devices: Conventional Current Version (8th Edition)' by Floyd, 'Electronic Communications Systems (4th Edition)' by Tomasi, 'Electric Circuits (7th Edition)' by Nilsson and Riedel, 'Introduction to Electric Circuits (3rd Edition)' by Dorf and Svoboda, 'Electronic Circuit Design: From Concept to Implementation' by Barrett, and 'Physics' by Cutnell and Johnson. The books show signs of prior use but appear to be in fair to good readable condition without significant visible damage. The cardboard box is sturdy with markings indicating compliance with "prescribed regulations."