The fonds consists of original letters written by Jeffrey Hale Supple and by the correspondents that his mother wrote to following his death. There are no outgoing letters written by Supple’s mother. There are also three photograph albums documenting Jeffrey Hale Supple’s career from 1928 to 1934, and one photograph album that may not have belonged to Supple, but which documents another Royal Air Force (RAF) service member’s experience while stationed in Baghdad from circa 1924 to 1926. Work of museum staff and volunteers have been included in the fonds, including photocopies and transcriptions of the letters, and supplementary research (mostly copied articles). The fonds has been arranged in five series: Original letters; Photocopies of letters; Transcriptions of letters; Supplementary Information; and, Photograph albums. Original letters were given sequential point numbers after the catalogue number 1967.1157, ranging from 1967.1157.1 to 1967.1157.131. The photocopies and transcriptions of the letters were given global catalogue numbers 1967.1157.200 and 1967.1157.300 respectively. The photograph albums were given global catalogue numbers 1967.1157.400, 1967.1157.500, 1967.1157.600, and 1967.1157.700, but were also designated with letters A-D. Individual photographs were then given a sequential number based on their placement in the album, such as, for example A-1 for the first photograph in Album A. The supplementary information was given global catalogue number 1967.1157.900. The number 1967.1157.800 was not used.

The fonds contains graphic and textual records related to J.J. Sebisty’s Second World War service. This includes three photograph albums, a log book, an air route book, a photo portrait, a discharge certificate, and a file of documents related to the investigation into Sebisty’s 1944 crash. It also includes the following artefacts: 3 service pins, RAF 110 squadron badge, and a heliograph. The records are arranged in rough chronological order.