[7] While attending Coláiste Chiaráin, Ó Sándair published a story in the first issue of the magazine An Gael Óg in 1938 under the pen name Cuan Aoibheann.
[9] Due to a post-war paper shortage, An Gúm was restricted to publishing only a small number of Ó Sándair's novels a year in the 1940s.
[10] Na Mairbh a d’Fhill was published in 1943 and was the first novel to feature private detective Réics Carló as the main character.
[12] An Gúm reprinted Ó Sándair's first two novels starring Réics Carló, Na Mairbh a d’Fhil and An tEitleán Dofheicthe, in 2022.
In addition to the many adventures of Réics Carló, Ó Sándair wrote a series of western novels featuring the character Réamonn Óg.