In 1920, a colt of Old Granny's named Nelson's Buck No. 2 impressed veterinarian Eric Christian to the point that Christian asked the Nelsons not to geld him. They agreed to let him remain a stallion, and he sired several cream-colored foals, though only one was registered: a colt named Yancy No. 3, whose dam was a black mare of Percheron breeding. Yancy sired Knox 1st, born in 1926 to an unregistered bay mare of mixed Shire ancestry. From this sire line, in 1931, a great-great-grandson of Nelson's Buck was born, named Silver Lace No. 9. Silver Lace was to become one of the most influential stallions of the American Cream breed. His dam was a Belgian mare with light chestnut coloring, and she is credited with Silver Lace's size – at he weighed considerably more than most of his bloodline. Silver Lace quickly became a popular stallion in Iowa. However, stallions standing for public stud service in Iowa were required to be registered with the Iowa Department of Agriculture, and this agency only allowed horses of recognized breeds. As Silver Lace was not registered with any breed registry, his owners created a breeding syndicate, and mare owners who bought shares in the "Silver Lace Horse Company" could breed their mares to him. However, his main breeding career coincided with the economic struggles of the Great Depression, and Silver Lace was at one point hidden in a neighbor's barn to prevent his sale at auction. Another significant foundation stallion was Ead's Captain, whose bloodlines appear in about one-third of all American Cream Drafts.