He said that he had his stud book with him all the time.
Since 1925 no horse other than those from registered parents are admitted to the stud book.
The first American stud book was published in 1882.
Since the closing of the stud book, the breed has declined in population.
There are now about 500 dogs registered in their stud books, making a strong comeback since 1975.
The breed is nearly extinct and its stud book was only established in 1995.
Most of the clubs have a closed stud book.
The thoroughbred breed is an example of a closed stud book.
Such records, called stud books, may be maintained by individuals, clubs, or other organizations.
In some cases, an open stud book may eventually become closed once the breed type is deemed to be fully set.