Stephen H. Kaisler - Computers & Internet: Books
Mainframes
Second Generation Mainframes: The IBM 7000 Series - Cambridge Scholars Publishing
Computer Resurrection Issue 98
The Second Generation
File:IBM 704 mainframe.gif - Wikimedia Commons
The Second Generation
IBM 700/7000 series - Wikipedia
IBM 700 Series
If you started with computers in the 1990's and hated mainframes – you were right