Living in Washington, DC--about 8 blocks from the National Archives--I've found muster rolls for both enlisted and officers for several U. S. ships. Have transcribed all of the enlisted muster rolls and officer rolls for the U. S. S. New Ironsides. URL: http://www.pa-roots.com/users/pacw/usnavy.html
Currently in the process of transcribing the U. S. S. Ironsides deck logs, and am using these to annotate the ship's entry in the Naval Historic Center's DAMFS.
List member, Gary Matthews, has provided terrific advice and guidance throughout this process.
Alice J. Gayley
Pennsylvania in the Civil War
http://www.pa-roots.com/~pacw/