The collection has three substantial parts. The most comprehensive and cohesive section is the one concerning John Tailyour, until his death in 1815. The second part contains business papers and accounts related to the Tailyour estate. The third part is the least integrated, and consists of a variety of family papers, photographs, military memorabilia, and other miscellanea.
The Tailyour papers date from 1743 to 2003, with the majority of the collection concentrating in the period from 1780 to 1840. Within these bulk dates, are the two largest portions of the collection: the correspondence and accounts of John Tailyour until his death in 1815, and the account records of the Tailyour estate after 1815.
Seven boxes contain John Tailyour's personal and business correspondence of 3757 letters. The letters focus on Tailyour's mercantile activities in the Atlantic market, especially on the slave trade, its profitability, and the threat posed by abolitionists. Tailyour's correspondence also chronicles personal and family matters, including the education and provision for his mixed-race children from Jamaica. In addition, the collection contains four of Tailyour's letter books of 1116 copies of retained letters that cover the period from 1780 to 1810, with the exception of the years 1786-7 and 1793-1803. In these letters, Tailyour's focus is business, particularly as it relates to the slave trade, but he also includes personal messages to his friends and family.
Tailyour's business papers contain 32 loose account records, as well as five account books documenting the years between 1789-90 and 1798-1816. These primarily concern his Kingston and Scottish estates, including the expense accounts and balance sheets for each, as well as the finances of his merchant activities during the period. Finally, 38 documents of probate records for John Tailyour mainly relate to his landed estate.
The latter portion of collection within these bulk years (1815-1840) also contains correspondence and accounts, although the 228 letters are almost entirely concerned with business accounts. These focus on Tailyour's estate after his death, with John's brother Robert as the main correspondent. Additional materials include 1761 business papers that chronicle the finances of the estate, 11 account books, and 6 hunting books. The business letters and account books detail the estate's expense accounts and receipts, as well as the balances for their annual crops, salmon fishing business, and profits derived from the rents collected on their land. The hunting books contain descriptive accounts of the family's hunts and inventories of their hunting dogs.
The third, and final, part of the collection consists of post-1815 Tailyour family records, including 49 letters from various family members in the late-nineteenth and early-twentieth centuries. Some of the records concern the First World War, including a group of prisoner-of-war records sent from Germany, and journals kept at home that detail news of the war, and daily domestic activities.
The family history documents include 64 genealogical records and 58 probate records. Many of the genealogical items are brief notes on family history, and sketches of the family tree, including a large family tree that spans several hundred years to the present day. The probate records contain one will from the late-nineteenth century, but are otherwise entirely concerned with John Tailyour's estate in the years immediately after his death.
Of the printed records, Memoirs of my Ancestors (1884), by Hardy McCall is a genealogy of the McCall family, and Tailyour's Marykirk and Kirktonhill's estates are described in two printed booklets, one of which is an advertisement for Kirktonhill's sale in the early-twentieth century. Other printed material includes 14 various newspaper clippings concerning the family over the years, and 12 miscellaneous items.
The illustrations, artwork, and poetry comprise 14 fashion engravings, 12 sailing illustrations, a picture of a hunting cabin, two silhouettes, and a royal sketch, all of which date from the early- to mid-nineteenth century. Kenneth R. H. Tailyour's sketches are represented in two sketch books created in his younger years (1917 and 1920). Loose records of poetry, as well as a book of poems from George Taylor, are in this section.
The 221 photographs are of the Tailyour family from the late-nineteenth to the twentieth century, with the majority falling in the early decades of the twentieth century. Most are portraits of the Tailyour family from the early twentieth century, particularly Kenneth R. H. Tailyour.
The 138 pieces of ephemera are, for the most part, postcards of foxhunts during the nineteenth century. These announce the almost-weekly family foxhunts during the middle years of the nineteenth century. The 19 items of realia, include Robert Taylor's quill pen from 1826.
The audio-visual portion of the collection contains three items: a compact disc with an audio interview of John Dann, Director of the Clements Library, on National Public Radio's "The Todd Mundt Show;" a compact disc with photos of the West Indies; and a collection of photographs of the Tailyour papers in their uncatalogued state, and of the festivities surrounding the acquisition of the collection.
Finally, miscellaneous material of 18 pieces includes Robert Taylor's commonplace book of short stories, letters, and poems; the catalogue of Robert Taylor's books; James Tailyour's 1771 style and form book; and a communion book.