The volume contains various manuscript documents regarding the Orsini Palace at Monte Orsini in Rome, formerly known as Monte Savelli. The documents are in different hands, and date from 1715 to 1736. Also bound into the volume are the following plans and drawings, some of which are fold-outs:

• View of the ramps leading up to the palace, watercolor on paper.
• "Pianta del Palazzo nel Monte Savelli oggi dell'Ecc.mo S.r Duca di Gravina," i.e. a plan of the palace, with index, ink and watercolor on paper.
• Plan of the palace, with index, ink and watercolor on paper.
• "Pianta delli quattro gabinetti che devonsi fare nel quarto del giardino verso la loggietta," i.e. small plan of four rooms to be built in one of the apartments of the palace, ink on paper.
• Plan of part of the palace, with index, ink on paper.

• "Prospetto del palazzo verso Ponte Quattro Capi" i.e. elevation of the palace, showing the portico to be built, ink and watercolor on paper.