Here's her record according to Joe Baugher. Looks like the side gun windows are later additions.
Baugher:
3634 (MSN 100-23960 (100-23460 according to Andrade) delivered on December 17, 1943, to the USAAF. Jan 1944
assigned to Lend-Lease program for the RAF as 'KL148'. Instead departed Hunter Field, GA, on January 19, 1944
on the southern route through Brazil to Africa enroute to "ELMS" (ie North Africa / Algeria);
May 1944 on May 30, to "DUKO" (ie Italy). Flew 7 combat missions from Corsica over Sicily and through the
Brenner Pass. With the USAAF 12th AF, 57th BW, 340th BG, 489th BS during April and May of 1944. It carried the
tail code '634 9C' and was named Ellen E. & Son.
Later back to the US via San Antonio, TX, and Great Falls, MT, before leaving for Sea Island at Vancouver;
Oct 1944 taken on strength by RCAF on October 18, as Mitchell II. Later stored until January 1947;
Jan 1947 assigned to No. 418 Squadron "City of Edmonton" Auxiliary. 1950 stored until June 1953;
Jun 1953 to Flying Instructors School at RCAF Trenton, Ontario; 1954 stored until 1956; on March 16, 1955,
1956 used for training; Jan 1961 transferred January 4, from RCAF Trenton 129AAF to Dunnville, Ontario;
Jun 1962 sold June 10, to Hicks and Lawrence Ltd., St. Thomas, Ontario;
Aug 1962 registered CF-NWV for the ferry flight on August 2;
Jun 1968 sold on June 1, to Richard B. McPherson of Aerodix Association, New Albany, OH;
Jul 1969 sold on July 29, to Glenn Lamont. Oct 1969 ferried from St. Thomas, Ontario, to Detroit City
Airport, MI, by Glenn Lamont, October 24; 1987 sold to Yankee Air Force, now "YANKEE WARRIOR"
Registered N3774, current. Based at the Yankee Air Museum, Willow Run, MI. Named Yankee Warrior
Reported 1989 at Milestones of Flight Museum, Lancaster, CA