Material consists mostly of correspondence from Father Hayes to his sister Mary (Mrs Ambrose Brown) and his niece Jean Brown. Other correspondence includes letters from Daniel Augustine O'Brien.

This file comprises 51 letters from Father Hayes to his sister Mary. Many of the letters have first day cover envelopes. Envelopes are often addressed to 'Mrs A. O. Brown' or 'Mrs Ambrose Brown'. Hayes frequently finishes with 'your loving brother'. There is an envelope with a newspaper cutting, another with an invitation and one with a mass list.

This file comprises correspondence from Father Edward Leo Hayes to his niece, Jean Marie Brown. There are 63 letters many with first day of issue envelopments. Additionally there are three postcards, some newspaper cuttings, ephemera, paper napkins, letters addressed to Father Hayes from others attached with a letter to Jean.

Consists of four letters to Father Hayes including one from D.A O'Brien.

Consists of correspondence between Father Edward Leo Hayes, his sister Mary and his niece Jean as well as philatelic ephemera, unpublished poetry and artwork. The collection also contains academic robes worn by Father Hayes when he received an honorary Masters of Arts degree from the University of Queensland and a whiskey bottle from by General Douglas McArthur.

An address delivered to the Toowoomba Historical Society by Br. L.J. Ansell, Toowoomba Diocesan Archivist, [1980?] Apr 21.

Material consist of the academic dress worn by Father Edward Leo Hayes when he received an honorary Master of Arts in 1967. also included is the certificate of award and a copy of speech given by the Vice-Chancellor during the award ceremony.