A text by Keith Tognetti, published as an Australian Mathematical Society Teaching Module. Available in Postscript, PDF or DVI-Format.

New Proofs of the irrationality of e^2 and e^4, by John Cosgrave. Maple worksheets and RTF preprint.

Explaination of functions and properties including differentiation and derivative.

Definition of e and the application of exponentials with nice illustrations.

Ivars Peterson's MathTrek, describing the constant e.

Subject: Re: How did we come by e? From: Matthew P Wiener Date: 1998/08/12 Newsgroups: sci.math

computed to over 50.000 digits.

Songs, poetry, and information about Euler's favorite constant.

The number e : history, algorithms, computations, references.

Information on Euler's constant and 10 reasons why it's better than pi.

An introduction to e with numerous references and links.