There were 54 Founder Members of USOC. They all paid 2/6 (25 pence) entry fee and an annual membership of 5/- (50 pence):-

• Miss Ashe (Belfast)
• Alfred Anderton (Lisburn)
• John Armstrong (Belfast)
• E Godfrey Brown (Holywood)
• Miss Mary Hamilton Brooke (Rostrevor)
• Charles J Brennan FRCO, President 1929-1967 (in France or Belgium at War) (Belfast)
• W H Bishop FRCO (Bangor)
• Frederick D Burrows (Belfast)
• E M Chaundy Mus Doc (Bangor)
• J Crozier (Belfast)
• Wm Curran (Belfast)
• Thomas H Crowe (Belfast)
• W A Grove (Belfast)
• A J H Coulter (Downpatrick)
• Warrington Donaghy (Belfast)
• James Dann FRCO (Belfast)
• G H Fitzsimons Mus Doc (TCD) (Bangor)
• Robert J Field (Belfast)
• F Greaves (Craigavad)
• J H Gleave (Carrickfergus)
• A F Hart (Belfast)
• J M Harvey (Belfast)
• Miss Tillie Hewton (Belfast)
• E Norman Hay Mus Doc FRCO (Coleraine)
• J A Hardcastle (Portadown)
• J L Kenny (Belfast)
• T S Kerr (Belfast)
• Wm A Littlejohn (Belfast)
• S Leighton (Belfast)
• Hiram Longmore (Belfast)
• F J Moffat (Belfast)
• Dr Arthur De Meulemeester KCOB (Belfast)
• Wm Moore (Belfast)
• G H McClenaghan (Belfast)
• J H McBratney (Belfast)
• J McKeown ARCO – Hon Secretary 1926-1955 (Belfast)
• Fred McClenaghan (Belfast)
• Wm H McDade (Belfast)
• J Neill (Belfast)
• Miss Florence Nixon LRAM (Belfast)
• R Peattie (Belfast)
• Allan F Parker (Belfast)
• Albert E Purdie (Belfast)
• Miss April Shepherd LRAM (Belfast)
• Cyril Shepherd LRAM – Hon Secretary in 1922-1925 (Belfast)
• George Smith – Hon Secretary for a short time (Belfast)
• H J Scott (Belfast)
• F H Sawyer Mus B FRCO (Belfast)
• R H Sheppard (Belfast)
• Miss May Shepperd LRAM (Belfast)
• F H Thompson (Belfast)
• J H Vincent Mus Bac (Belfast)
• Lawrence Walker MA Mus Doc FRCO – President 1918-1928 (Belfast)
• E J Youds (Belfast)

Word must have got about because the original 54 were joined by 33 others in 1919!