Donald Ross produced a pamphlet listing his designs. I estimate it was created in 1931 or 1932 and it featured 174 courses (186 if you consider multi-course projects). Today we have a number of Ross lists floating around - C&W and the Ross Society for example - and Ross omitted several courses that he is credited...for whatever reason.
Some courses he did not list: Wellshire (CO), Hartford, Boca Raton, Bobby Jones, Sara Bay, Hyde Park (FL), Oak Park, Poland Springs, Indian Springs (MD), Prince Georges (MD), Bass River, Wianno, CC of New Bedford, Springfield (MA), Whittinsville, White Bear Yacht, Wentworth (NH), Siwanoy, Carolina, Grove Park Inn, Wilmington, Arlington (OH), Columbus, Westbrook (OH), Overbrook, Pocono Manor, Port Judith, Cherokee, Homestead (VA).
He does not list Panama (FL) and Chester Valley (PA) which are now known to be the work of other architects. He also omits Bob O'Link, Echo Lake and Seaview I suspect because they had been redesigned by the time the pamphlet was made.
He also designates sixteen of his accomplishments as remodeling jobs and lists only five 9-hole designs.
Any ideas why some of these other courses were left off his list?