This series contains loose papers related to early family activities of the Staley, Poyntell, Warner, and Cobb families. The earliest papers mainly concern land transactions in Philadelphia and other parts of Pennsylvania. Warner family items begin in 1799 with Massachusetts Turnpike Corporation shares, and Cobb items in 1801. Warner items show land transactions in Maine, legal matters that William A. Warner handled, and his estate papers (from 1830). Caldcleugh family lands appear in 1842, and Hermann Jackson Warner's Harvard papers begin in 1846. French spoliation claims of the Warner family begin in 1850, with one Cobb family claim item in 1802. George Bates' miscellaneous papers begin in the 1850s and include items pertaining to Mount Auburn Cemetery and the will of Sarah Inches Cobb Warner Bates (1857). The series also contains some correspondence among family members and letters to Hermann Jackson Warner from around 1860. Papers of Jane Sarah Warner Spindler appear in the 1880s, many items in German. After their marriage in 1883, the Warners traveled widely in Europe, Japan, China, India, and other places. Correspondence from 1888 is mainly that of Mary Poyntell Staley Warner with her family (particularly siblings Frank, Helen, and Rebecca) and friends, describing her travels, activities, and other family matters. Hermann Jackson Warner's personal papers after college begin around 1861.

This series (arranged by Hermann Jackson Warner) contains mainly letters written to him and Mary Poyntell Staley Warner from friends and family members. Letters are arranged alphabetically within each year. Each year contains an index of correspondents in the first folder of that year.

These diaries were arranged, numbered (except #179), and bound by Hermann Jackson Warner. The early volumes are from his school years, eventually including his years at Harvard (1846-1850), Harvard Law School, and beyond. After he moved to Germany in 1869, his diaries describe his activities overseas and on numerous excursions to other parts of Europe and eventually to Asian countries, India, Egypt, etc. The diaries often contained loose items such as newspaper clippings; these have been removed from the volumes and are stored in separate folders with the volumes. This series also includes one diary (vol. 179) that was not numbered by Warner, describing travel in Germany and elsewhere, 1859-1860. Warner first visited Germany in 1859-1860 and moved there in 1869 for health reasons, residing in Dresden for the rest of his life, while also traveling extensively throughout Europe and other parts of the world.

A few of the volumes were disbound before this collection description was created.

These volumes were arranged and numbered by Hermann Jackson Warner (except for the volumes in box 85). The volumes were created by Warner and include a commonplace-book (vol. 7); unbound "College Volumes" (scrapbook gatherings of essays, printed pamphlets, catalogs, and ephemera); writings; materials pertaining to Crete and the Greek Relief Committee ("Creta"), 1863 onwards, during the Cretan struggle for independence; "Pantodapa" volumes (vol. 64-65) pertaining to Greece, Syria, and theological topics; and a history of Hardwick, Mass. (vol. 63) that contains genealogical information on the Warner family. This series also includes previously unnumbered volumes (now 176-178, 180) in box 85, a history notebook from college (1849), a printed book of sketches from college, Warner's passport, and personal accounts from 1892.

Hermann Jackson Warner was a committed letter writer, and he painstakingly transcribed and annotated most of his correspondence in volumes which were arranged, numbered, and bound in Germany. A number of volumes contain family and miscellaneous correspondence, and they are followed by Warner's long (multi-volume) collections of letters with Mary Poyntell Staley Warner, Lida M. Schoonmaker (later Countess von Krockow), Joshua Hall Bates, Lucy Cobb Bates Williams, Edward C. Guild, John Augustus Higginson, Baron Alexander von Pfafins, Andrew C. Wheelwright, Edward Wheelwright, and Jane Sarah Warner Spindler. Volume 66 consists of loose original correspondence of Bates and Warner family members. Most of these volumes had loose items tucked into the pages; these items are now foldered separately.

These volumes were gathered, arranged, and numbered by Hermann Jackson Warner in the order they appear here. Some volumes are bound, and some consist of loose gatherings of papers. The earliest dated material is in volume 108 (William A. Warner Papers II, 1793-1834). This series also includes a volume of loose original correspondence of Bates and Warner family members, 1836-1863; a scrapbook of Sarah Inches Cobb Warner Bates (including a European travel diary, 1818-1819); correspondence, school papers, notebooks, legal notes, family items, bills, account books, and bank books of William A. Warner; Mary Poyntell Staley Warner travel diaries (1886-1888); Mary Brimmer Warner school journals (1839-1840) and writings, diaries (1846-1850), commonplaces, and expenses; Jane S. Warner's compositions, passport (1870), and school diary (1840); and George Bates's letterbook (1840-1841).

Oversize papers from the rest of the collection.