Twelve [sonatas] for two violins and violoncello with a thorough bass for the harpsichordBoyce, William, 1711-1779[17--]engAutograph manuscript by an anonymous copyist of the first violin part from Boyce's twelve trio sonatas. The ninth trio sonata, which appears last in order, is incomplete. The twelve sonatas are designated as "No. 7" on the title page and in caption titlesTitle written as: Twelve sonata's for two violins and violoncello with a thorough bass for the harpsichord composd by Dr Boyce.