Consists of autograph signed letter to Forbes from the historian Charles Forbes Réne de Montalembet (the Count of Montalembert), son of Forbes's daughter Eliza Rose.

First volume of Forbes's manuscript travel journal. This volume contains entries related to the writer's travels to Hamburg, Hanover, Brunswick, Wolfenbuttel, Berlin, Potzdam, Sans-Souci, Wittenberg, Leipzig, Dresden, Prague, and Vienna. Page [11] contains a dedication to Forbes' daughter with the inscription: "Scribere jussit Amor. In every work regard the writer's end; Since none can compass more than they intend." Manuscript is written on laid paper, bound in half leather with marbled covered boards.

Fourth volume of Forbes's manuscript travel journal. This volume contains entries on various sites in Rome, including the Villa Borghese, St. Peter's, the Villa Albani, the Church of St. Agnes, the Mausoleum of Constantia, the Baths of Caracalla, St. Sebastian, the Catacombs, the Aventine Hill, the Vatican, the Esquiline Hill, and the Spada Palace, written during November and December 1796. Entries also describe a December 1979 trip to Naples. Manuscript is written on laid paper, bound in half leather with marbled covered boards.

Second volume of Forbes's manuscript travel journal. This volume contains entries related to the writer's travels to Vienna, Styria, Carniola, Trieste, Venice, Pesaro, Ancona, Loreto, a journey over the ApennineMountains, and Rome. Manuscript is written on laid paper, bound in half leather with marbled covered boards.

Third volume of Forbes's manuscript travel journal. This volume contains entries related to a stay in Rome during the winter of 1796 and "an excursion to the interesting scenes at Tivoli." Manuscript is written on laid paper, bound in half leather with marbled covered boards.

Fifth volume of Forbes's manuscript travel journal, beginning in February of 1797 with Forbes's departure from Rome to Florence. Includes descriptions of sites visiting while en route, including Aquapendente, Radicofani, and Sienna. Entries describe Forbes's stay in Florence and its monuments and art, including an entry on "Italian music." Journal also contains descriptions of the journey from Florence to Genoa, and along the Ligurian coast. One entry is devoted to the "French Revolution, its consequences in Italy." Finally, the journal contains entries on the voyage from Genoa back to England on 19 February 1797. Journal contains an addenda added in 1799. Manuscript is written on laid paper, bound in half leather with marbled covered boards.