Engraved on each record was, among other things, a soundtrack containing a compilation of 54 peace greetings to the universe recorded in different languages by various UN delegates. Ralph succeeded in persuading the UN and NASA to accept a message in Esperanto. It is located third-last on track 3 of the golden records and says (translated):  “We strive to live in peace with the peoples of the whole world, of the whole Cosmos.” Before the 1972 Olympic Games in Munich, Germany, when he was serving as Australia's ambassador to West Germany, Ralph translated into Esperanto several important UN documents, including the Charter and Universal Declaration of Human Rights. He edited a modest booklet with sport related terms in Esperanto and their translation into English, French and German. For decades he collected specific Australian expressions and published the first Australian English-Esperanto dictionary. Ralph also wrote an English-Esperanto bridge (card game) dictionary, a review of Peter Benson's "Comprehensive English-Esperanto Dictionary" (CEED, 1995) and a collection of familiar quotations ("flugilhavaj vortoj", literally "words with wings") from languages around the world, with their Esperanto equivalents. Ralph was the main translator of the "Aŭstralia Antologio" ("Australian Anthology", 1988) which brought excerpts of Australian literature to the Esperanto-speaking world. Inspired by the well-known Esperanto-cabaretist Raymond Schwartz, he published humorous short stories and memories from his professional life in many Esperanto periodicals. They were collected in the reader "La Diplomato kiu Ridis" (1997) ("The Diplomat Who Laughed"). Although Ralph declined positions in the international Esperanto bureaucracy, he presided over the Australian Esperanto Association (AEA) in 1960–61 and then for several years after his retirement in 1977. He was member of AEA's examination commission and funded several of its projects. With Ivo Lapenna, former president of UEA, he worked together in the Internacia Esperanto-Asocio de Juristoj (IEAJ) and contributed to its organ Internacia Jura Revuo (IJR), mainly on topics of international public law. In 1967 he was honoured by the Universal Esperanto Association with a rare membership in the "Honora Patrona Komitato".