Va. Code § 17.1-235
The clerks of the circuit courts shall keep a separate book, which shall be known as the federal farm loan mortgage book, in which shall be recorded mortgages executed to secure the payment of loans made by federal land banks under authority of the act of Congress, approved July 17, 1916, known as the Federal Farm Loan Act, which mortgages, when so recorded in such book shall be indexed in the proper general index book, as well as in the index to such farm loan mortgage book; provided that any such clerk instead of providing such separate book may immediately spread upon the book in which deeds are recorded in his office any and all proper mortgages or deeds of trust executed to secure such loans and all of such mortgages and deeds of trust shall be immediately spread upon such records when received, so that the original thereof may be returned to the federal land bank as soon as possible.
Va. Code § 17.1-235