I would like to know where on the web I could find free proof reading
or editing services for student essays.  I know AOL offers free proof
reading under it's research and learn section.  But  are there any
others?

Dedios,
There are several Proof Reading and Editing services available online,
Grade Saver
https://www.gradesaver.com/college/proofcoll.html
or
https://www.gradesaver.com/essays/proofessay.html for submission

HG publishing has a section available, for what appears to be free
editing and proof reading.
http://www.hgpublishing.com/EssayHelp.html

Editave has several links on this subject aswell
http://www.editavenue.com/useful_links_1.html

Ivy Essays has an editing service, which has very good ratings...
http://www.ivyessays.com/edit/index.html

And last but not least, Hyper life offers an editing service for many
different categories, with 1-2 day service
http://www.hyperlife.net/editing.htm

I hope my research was useful to you, and I am happy to have answered
your question.
Askjosh

For Clarification, I miread part of your Question, only one of those
is a free service.
https://www.gradesaver.com/essays/proofessay.html for submission 
http://www.hgpublishing.com/FreeEssayHelp.html
 
HG publishing has a section available, for what appears to be free
editing and proof reading.

Mr. Essay
http://www.mressay.com/why.html
To my knowledge, these are the best that exist, for Free!
The others, for a small fee, look like excellent services.

Hi,
A few months ago I used http://www.korepetycje.com/editing.html; they
will do editing of one page for free as long as your order contains
than 4 pages [you need to request that in advance].
Cosmic