Map shows the Affair of Henderson's Hill on March 21, 1864. It is from A Compilation of the Official Records of the Union and Confederate Armies: Volume XXVI Part I (1891), p. 225.
Lt. Col. Robert N. Scott (ed.). A Compilation of the Official Records of the Union and Confederate Armies: Volume XXVI Part I, 1891, U.S. Government Printing Office, Washington, D.C.
<a rel="nofollow" class="external free" href="https://babel.hathitrust.org/cgi/pt?id=coo.31924077700288&amp;view=1up&amp;seq=247">https://babel.hathitrust.org/cgi/pt?id=coo.31924077700288&amp;view=1up&amp;seq=247</a> - This is from the Official Records.