He and his wife, May Emerson, run Tamarack Hill Farms in Strafford, Vermont and Southern Pines, North Carolina.
The team included Bruce Davidson on Irish Cap, Michael Plumb on Good Mixture and Don Sachey on Plain Sailing.
[15] Emerson competed at his final advanced three day at Groton House Farm in South Hamilton, Massachusetts in 1999 at the age of 58.
In 2004 Emerson earned a Tevis Cup buckle for completing the 50th Anniversary of the Western States Trail Ride, a 100-mile endurance race.
In 2011 Emerson completed his 50th consecutive season as an entry in the Preliminary or Federation Equestre Internationale (FEI) CCI* level.
[18] That same year, however, Emerson broke his C1 vertebrae after falling during the cross country phase of an event at the Stoneleigh-Burnham School Horse Trials in late July.
[19] Emerson made a full recovery and, as of 2015, continues to regularly school horses and compete in both jumper and dressage shows.
Former pupils include Kelli McMullen Temple, a member of Canada's equestrian team at the 1996 Summer Olympics;[20][21] Dorothy Trapp, the 1994 Individual World Championship silver medalist;[22] David O'Brien, the 1996 winner of Bromont;[23] and Nancy Bliss, a team bronze medalist at the 1982 World Championships.
[25][26] Emerson and his wife, May, live on and run Tamarack Hill Farms in Strafford, Vermont and Southern Pines, North Carolina.
Emerson also wrote the forewords to Sally Swift's Centered riding;[31] Priscilla Endicott's Taking Up the Reins;[32] Donna Snyder-Smith's The All Around Horse and Rider;[33] and the United States Combined Training Association's (USCTA) Book of Eventing.
Some of their former and current stallions include Forfeit, Right of Light, O'Hara, Epic Win, Wintry Oak, Loyal Pal, Goliad, Not Surprised, Prussian Blue, Silver Comet, Reputed Testamony, Aberjack and Formula One.