Article resources:

"Maxwell: Perfectly Simple; Simply Perfect," by James Zordich, Horseless Carriage Gazette, Vol. 38 No. 6, Nov-Dec 1976, pp. 19-47
"The Two Cylinder Maxwell," Horseless Carriage Gazette, Vol. 23 No. 3, May-Jun 1961, pp. 32-38
"Maxwell: One Dollar of Reliability for Every Dollar of Cost," by Bill Cuthbert, Horseless Carriage Gazette, Vol. 61 No. 2, Mar-Apr 1999, pp. 16-21