Born: Established: 1 Aug 1905 Tallinn,
Trett also edited and wrote explanatory notes and an epilogue for a book by his mother, Marie Elvine Tretjakevitsch: The Remembrances of a Great-grandmother .
Listed in his Tales of Doctor Amber are 'other published works by the author' which includes A H Tammsaare, Nagu Teda Tundsin, Literary reminiscences in Estonian.
A Bibliography of Australian Multicultural Writers compiled by Sneja Gunew, Lolo Houbein, Alexandra Karakostas-Seda and Jan Mahyuddin (1992) lists other publications The Butterfly Frock (1985), Echoes of the Past (1986) and Kord Kunagi... (Once Upon a Time, 1989), as well as two volumes of essays.
These have not been traced..
Together with Lydia Trett he compiled and edited Laulula Elatud Elu, a Festschrift for Meta Pruul (1912-1981), in Estonian. .