Royal Navy | Royal Air Force | Royal Dutch Shell | Royal Society | Royal Albert Hall | Royal Shakespeare Company | Royal Opera House | Royal Victorian Order | Royal Engineers | Royal Australian Navy | Royal National Theatre | Royal Canadian Navy | Royal Canadian Air Force | Royal Court Theatre | Royal Marines | Royal Commission | Royal Academy of Music | Anne, Princess Royal | Royal Philharmonic Orchestra | Theatre Royal, Drury Lane | Royal Flying Corps | Royal Canadian Mounted Police | Royal Australian Air Force | Royal Artillery | Royal Festival Hall | Royal College of Art | Royal Botanic Gardens, Kew | British Royal Family | Royal College of Music | Paul Weller |
Gavagan was elected as a Democrat to the 71st United States Congress to fill the vacancy caused by the death of Royal H. Weller; he was re-elected to the 72nd and to the six succeeding Congresses and held office from November 5, 1929, to December 30, 1943, when he resigned, having been elected a justice of the New York Supreme Court.
In 1973, a page by "Stelling" entitled 'Missile Crisis' was made part of Michel Choquette's comic book The Someday Funnies.