Octavo 19th century half morocco (tips worn) viii+262pp+Appendix 31pp Previous owner has written in the author & his profession (Attorney to the Signet Edinburgh) one page has three word correction inked in & last page of appendix has scuff with consequent loss of three letters. A well reasoned study of famous "Casket" letters by whose aid Mary Queen of Scots was implicated in the murder of her husband.