On folio i is written `No. 14 of Mr. Matthew Crawfurd`s printed Catalogue of Manuscripts. in fol.`, which appears to be intended as a title for the volume, although it does not correspond to the contents. On the same folio the letter `B` and the signature `John Wright` appear twice. All of these are in eighteenth-century hands. Section (iii) is the earliest, and the volume must have been later adapted by the writers of sectitons (i) and (ii).

Section (i): Sale-catalogue of books, early eighteenth century. Some items were bought from Mr Patrick Anderson (folio 28 verso). (Folios 1-36).

Section (ii): Priced sale-catalogue of books, Edinburgh, 1726. In the same hand is written on folio 35 `Books bought from Sir John Houston and Belonging to Mr John Leitch, Edinr. Aug. 7, 1725` (the rest of the page is blank). Leitch may be the `Mr. L` who appears in the margin of folios 5 verso, 15, 29 verso, and 31 verso. (Folios 37-54).

Section (iii): Transcripts, late seventeenth century, of letters, late sixteenth century, of Scottish interest in the Caligula section of the Cotton Library. (Folios 55-101).