Below are some websites you might like to check out.
Nancy
History Of The American Civil War, Volume 2, by John William Draper,
pub. 1867-1870; section on the Peninsular Campaign; descripton of
the Battle of Seven Pines (Fair Oaks) begins at about page 384.
http://tinyurl.com/rw2vh
Map of the Battle of Seven Pines, with troop positions; image can be
magnified:
http://upload.wikimedia.org/wikipedia/en/2/28/Seven_Pines.png
For maps of other CW battles: Hal Jespersen's Wikipedia Civil War
Maps:
Version 8.7 of the U.S. Civil War Units File (June 29, 2006) is
available on the web and will soon be available from the Rootsweb
server. (See below for addresses.)
The Civil War Units File (CWUNITS) lists people who have information
on a unit, ship, or group (often rosters, battles, etc.) and are
willing to help others research it. Some are experts; most are
"just" helpful fellow researchers. If you see a listing for a unit
you are interested in, you can send the contact person email and share
informat