In the summer of 1935, A.W. Tillinghast commenced a tour of the country's golf courses as a consulting golf course architect for the P.G.A. of America. Tilly was hired by his good friend George Jacobus, who was president of the P.G.A. and Head Golf Professional at Ridgewood Country Club in New Jersey.

Tilly's services were provided free of charge and only to golf courses and clubs where P.G.A. members were employed. Tilly visited over 500 golf courses through the summer of 1937 and made two complete coast to coast loops of the country. He has generally been credited with the elimination of thousands of sandtraps, which he called "Duffer Headaches," or DHs for short. Tilly's DHs included bunkers and other hazards that hindered the high handicap and were generally found inside of 140 yards of the teeing ground. On many courses he advocated their removal to help the high handicap and reduce the costs of course maintenance. During his consulting tour he wrote, "It is a matter of record that I have condemned nearly eight thousand sand traps."

Schenectady, NY -- Edison CC, Wolfert's Roost CC, Van Rensselear CC, Colonie CC, Troy CC, Mohawk GC, Amsterdam Municipal GC, Lafayette CC.

Rochester, NY -- Drumlins CC, Rochester CC, Irondequit CC, Genesee Valley Municipal GC, Durand Eastman Municipal GC

Greenwich, CT -- The Round Hill Club

Avon, CT -- GC of Avon

Farmington, CT -- CC of Farmington

Newington, CT -- Indian Hill CC

West Hartford, CT -- Rockledge CC

Hartford, CT -- Edgewood CC, CC of Norfolk, Wampanoag CC, Sunset Ridge CC, Manchester CC

Woodmere, NY -- Woodmere Club

Reading, PA -- Berkshire CC

Sinking Spring, PA -- Manor Golf Course

Reading, PA -- Reading CC

Pittsburgh, PA -- Pittsburgh FC, Edgewood CC, Fox Chapel

Long Grove, IL -- Twin Orchard GC

Glen Ellyn, IL -- Glen Oak CC

Midlothian, IL -- Midlothian CC

Homewood, IL -- Ravisloe CC

La Grange, IL -- La Grange CC

Palos Heights, IL -- Westgate Valley CC

Pikesville, MD -- Woodholme CC

Washington, DC -- East Potomac Park (36 holes)

Landover, MD -- Beaver Dam CC

Quantico, VA -- Quantico

Richmond, VA -- Hermitage CC (Belmont)

Pinehurst, NC -- Pinehurst #2

New Orleans, LA -- West End CC

Houston, TX -- Gus Wortham Muni

San Antonio, TX -- Brackenridge Park Muni, Riverside

Austin, TX -- Austin CC, Austin Muni GC

Waco, TX -- Spring Lake CC

Los Angeles, CA -- Fox Hills Club

San Francisco, CA -- El Camino

Rochester, MN -- Rochester G&CC

Golden Valley, MN -- Golden Valley CC