Your search for "Letters which mention enclosures" returned 44 letters.
documents - Bess (dowager countess of Shrewsbury) writes to Sir Julius Ceasar in regard to the petition by the tenants of the High Peak. The letter is a covering note to Bess's full answer in response to the petition, as well as the answer of her son William Cavendish, carried by the letter-bearer.
a new year's gift - Henry Cavendish sends his mother, Bess (dowager countess of Shrewsbury), a new year's gift ('a symple newyears gyfte') from himself and his wife Grace.
letters - George Chaworth writes to his patron, Bess (dowager countess of Shrewsbury), and apparently encloses letters (referred to as 'These'): 'These are to desyre your honors pardon for the last letters I sent you'.
a new year's gift: a prayer cushion - Mary Talbot sends to her mother, Bess (dowager countess of Shrewsbury), a new year's gift of a prayer cushion made to match the bed and sparver (that is, the canopy over the bed) of her daughter (Bess's granddaughter) Aletheia Howard (born after 1582; married Thomas Howard, earl of Arundel in 1606).