Several horses in the the French stud book has Gael (F) listed as their sire. In 1992 it was made public by Albert Veslard’s son that mares owned by his father that were due to be covered by Gael in 1937 were in fact covered by the American stallion Calumet Delco instead. The subsequent foals by Calumet Delco were registered as by Gael because the Stud Book du Trotteur Francais was closed at the time to all outside blood. As there are no officially registered foals by Calumet Delco in the Stud Book du Trotteur Francais, his line doesn't officially exist, however its existence is commonly accepted in France where the leading trotting magazine, Trot Information, refers to this line as 'Lignee Calumet Delco'. So here, Quiroga II is listed by Calumet Delco (US) even though this differs from the French stud book.