May 2: Microsoft Introduces 2-Button Mouse | This Day in History | Computer History Museum
Multi-Button Mouse Support | Big Mess o' Wires
File:2-buttons mouse.jpg - Wikimedia Commons
Why doesn't Apple computer use a second mouse button which is extreme useful in Windows systems? - Quora
Microsoft 93633 Mouse PS/2 Two Button
Two-button Computer Mouse Isolated Against White Stock Photo 5446846 | Shutterstock
Micro Innovations Two Button Mouse Contour Hand With PS/2 Connection PD39P 788875313295 | eBay
Logitech OEM USB 2-Button Mouse (MU34)
USB 2-Button Mouse for PC and Mac
What is a good optical mouse, with 3 real mouse buttons? I.e. I don't want the scroll wheel to be the middle button, I want a real button there. - Quora