• NewtonMuseum - This site has photos of early Newton prototypes.

• Wayback Machine - If you ever wondered how a website looked in the past then this is the tool to use. By inserting a web address into the Wayback Machine you get archived snapshots. So you can use this to see how the Palm.com website looked way back in early 1997!

• PalmEvolution.com - Contains both an Evolutionary Tree that graphically shows the development of Palm operating system handhelds as well as a chronology of significant events, or "Milestones".

• ThisOldPDA - Has some technical data, commentary and pictures regarding Apple Newtons and Windows CE 1.x PDAs.

 Other History sites:

• DataMath Calculator Museum - Covers calculator products mainly from Texas Instruments.

• Vintage Calculators - This site shows the evolution from mechanical calculators to the handheld electronic calculator.

• HPmuseum.org - The Museum of HP Calculators displays and describes older Hewlett-Packard calculators. There are also sections on calculating machines and slide rules as well as sections for buying and selling HP calculators, an HP timeline, collecting information and a software library.

• Computer Museum - Covers pocket calculators and portable computers.

• Obsolete Computer Museum - Has early desktop and laptop model computers with some photographs in 3D.