Transcripts and documents made by Jones for his book on the American loyalists, The Loyalists of Massachusetts: Their memorials, petitions and claims (St Catherine Press, 1930).

These papers are largely concerned with Humphreys' involvement in the development and promotion of Latin American Studies in Britain. The collection is roughly divided into three series. The 'correspondence' section includes letters from a variety of people, including British historians such as Hugh Hale Bellot and historians of Latin America and the USA (1934 to 1982). Amongst the papers of committees and conferences promoting Latin American Studies in Great Britain in the second section are: papers of the University College London Advisory Committee and the University Grants Committee on Latin American Studies; correspondence relating to committees; interview papers and reports. The third section contains items created by Professor Humphreys including unpublished papers, and printed newspaper articles.

Bibliography of Ancient Peru, principally of works in Spanish, French, English and Latin, compiled by Francis J Hambly [after 1930], entitled 'Peru: the Cradle of South America'. This bibliography was intended to be the first of a series of works of reference on the subject of Ancient Peru.

Typescript translations by Archibald Gostling, 1932, from the Spanish of accounts of a voyage to the Canary Islands by Nunez Cabeza da Vaca (c 1490-1564) and of book by Bartolome de las Casas (1484-1566) [possibly 'Very brief account of the Destruction of the Indies'].

Photographs of native Americans [Red Indians, American Indians] such as chiefs, warriors, and women. Includes portraits of Sitting Bull's son and Iron Horn. These photographs are assumed to have been taken in Dakota Territory.

Manuscript translation into English, by an unknown hand, of Petrus Martyr Anglerius, Opus epistolarum ... Cui accesserunt epistolæ Ferdinandi de Pulgar, Latinæ pariter atque Hispanicæ (in Latinum idioma conuersæ a J. Magon), cum tractatu Hispanico de viris Castellæ illustribus, edited by C. Patin, (Elsevir, Amsterdam, 1670) 'The Work of the Letters of Peter Martyr of Angleria, a Milanese...to which are added the letters of Fernandez de Pulgar....'.