The Project Gutenberg eBook of IBM 1401 Programming Systems, by Anonymous.
Ken Shirriff on Twitter: "The IBM 1401 was the most popular computer of the early 1960s. It used 80-column punch cards and magnetic tape for data storage. I wrote a small program
Rebuilding the IBM 1401 - IEEE Spectrum
IBM100 - IBM 1401: The Mainframe
Creator Made Mini Version of IBM's Iconic 1401 Computer
The Legendary IBM 1401 Data Processing System | Semantic Scholar
IBM100 - IBM 1401: The Mainframe
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe
File:IBM 1401 at CHM.jpg - Wikimedia Commons
Miniatua Limited Edition | IBM 1401
The Rebirth of the IBM 1401 Computer - IEEE Spectrum
About the Computer History Museum's IBM 1401 Machines - CHM
The Rebirth of the IBM 1401 Computer - IEEE Spectrum
IBM-1401 | Sky Dancing
This tiny model of a big IBM 1401 computer from 1959 is so great | Boing Boing
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IBM 1401 Demo Lab - CHM
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Computer History: IBM 1401 Product Announcement 1959, Data Processing Mainframe (7070, RAMAC) - YouTube