This is a postcard from my pal Hilarie. She went on a trip on Chincoteague Island and she picked up this postcard.
I found this about this type of ponies.
The Chincoteague Pony, also known as the Assateague horse, is a breed of pony that developed and lives in a feral condition on Assateague Island in the United States states of Virginia and Maryland. The breed was made famous by the Misty of Chincoteague series written by Marguerite Henry starting in 1947. While phenotypically horse-like, they are commonly called “ponies”. This is due in part to their smaller stature, created by the poor habitat present on Assateague Island. Variation is found in their physical characteristics due to blood from different breeds being introduced at various points in their history. They can be any solid color, and are often found in pinto patterns, which are a favorite with breed enthusiasts. Island Chincoteagues live on a diet of salt marsh plants and brush. This poor-quality and often scarce food combined with uncontrolled inbreeding created a propensity for conformation faults in the Chincoteague before outside blood was added beginning in the early 20th century.
Several legends are told regarding the origins of the Chincoteague, with the most popular being that they descend from survivors of wrecked Spanish galleons off the Virginia coast. It is more likely that they descend from stock released on the island by 17th century colonists looking to escape livestock laws and taxes on the mainland. In 1835, the practice of pony penning began, with settlers rounding up ponies and removing some of them to the mainland. In 1924 the first official “Pony Penning Day” was held by the Chincoteague Volunteer Fire Company, where ponies were auctioned as a way to raise money for fire equipment. The annual event has continued in the same fashion almost uninterrupted to the present day.