Heritage Open Day: Read, learn, discover. Heritage Open Days give you a rare chance to enjoy the tranquil atmosphere of Tavistock’s heritage library. Read books from 17th to 21st centuries. Learn how to use the online catalogue. Discover the local authors Begun as a Literary Club by four young men then aged 17-21, the Subscription Library was formalised three and half years later in June 1799 by the very same; John Taylor, William Evans, Edward Bray and John Commins. The Library was patronised from 1810 by the 6th Duke and Duchess of Bedford and has been resident at Court Gate, off Guildhall Square, in a building especially created for the Library by the 6th Duke about 1830.