V 

Vanity Press

 prints books for a fee.

Vanity Press

 A waning term as the name implies a "Vanity Press" is a publisher that produces books with the author paying all costs and maintaining all ownership. Vanity Presses most commonly do not allow author input other than paper color and binding style.

Variant

 Refers to a minor difference between printings, usually on the title page or on the endpapers.

Vellum

 A fine parchment made from calfskin, lambskin, or kidskin, not tanned but treated with chemicals to make it suitable for writing and printing on and for binding. Can also refer to heavy off-white fine-quality paper resembling this parchment.

Verso

 The back of the leaf; the page that lies to the left in an open book. Versos are the even-numbered pages. Also known as verso page. See also recto.

Very Good

 See condition guide.

Volume

 A book or periodical that is part of a series or a set. The volume notation can be a number, letter, or a similar form.