is there a site which archives websites and changes in those sites so
that I can access them to view the how websites have advanced over the
years?  For example, I would be able to access the HP website from 5
years ago, then 2 years ago and 1 year ago.

Hello kharmaven-ga,

Thank you for your question.


The answer to your question is yes, there is a site which archives 
Websites. 
“The Internet Archive Wayback Machine puts the history of the World
Wide Web at your fingertips. The Archive contains over 100 terabytes
and 10 billion web pages archived from 1996 to the present.”
The Internet Archive Wayback Machine
http://web.archive.org/collections/web.html

To start using the Wayback Machine to surf the web as it was, just
type a URL (a web site address) into the box, click the Take Me Back
button, and start exploring the past.
The Internet Archive Wayback Machine
http://web.archive.org/collections/web.html

For example, I typed in http://www.hp.com, and clicked on the “take me
back” button. There were 598 results.

The link for the HP Website in December 1996
http://web.archive.org/web/19961219132002/http://www.hp.com/

The link for the HP Website in February 1997
http://web.archive.org/web/19970206040215/http://www.hp.com/

The link for the HP Website in February 1998
http://web.archive.org/web/19980208232418/http://www.hp.com/

The link for the HP Website in January 1999
http://web.archive.org/web/19990125090138/http://hp.com/

The link for the HP Website in March 2000
http://web.archive.org/web/20000301065028/http://hp.com/index.html

The link for the HP Website in April 2001
http://web.archive.org/web/20010402024240/http://www.hp.com/

The Internet Archive has put together some special collections of web
sites from the Archive such as September 11th, Elections 2000, the
United States Government and Web Pioneers a collection of a handful of
sites that played a role in the early internet.
The Internet Archive Wayback Machine
http://web.archive.org/collections/web.html

At the advanced search page you may retrieve an archived copy of a
specific URL for a given date, search for all copies of a specific URL
archived in a given time period and retrieve the most recently
archived copy of a specific URL.
The Internet Archive Wayback Machine Advanced Search Page
http://web.archive.org/collections/web/advanced.html

Additional information about The Internet Archive can be found here.
http://www.archive.org/index.html

Search Criteria:
Way Back Machine


I hope you find this helpful and if any part of my answer is unclear,
please don't hesitate to ask for clarification.

Best regards,
Bobbie7-ga

Thank you for your help.  The sites that you gave me were exactly what
I was looking for.  They will be very helpful in my class.  My
students feel that the Internet has been around in the present form
for all time and forget when a site changes or disappears.  Thank you
again.