Carretto's name was inspired by the “carretto siciliano”, a traditional [Sicilian] horse or donkey cart decorated in an unusually colourful/ornate style, and Carlo Carretto, the Italian Catholic mystic and writer. Carretto's logo was inspired by the covers of the English-language versions of Carlo Carretto’s books, published in the 1970s.
The font used for the books' titles was Bookman (Italic version), a serif typeface that was popular in that decade. Bookman is known for its versions of letters with ornate swashes, which bear a similarity to the carretto siciliano's decorative patterns. The typeface I used for Carretto's logo design is Bookmania, a contemporary version (2011) of Bookman created by type designer Mark Simonson for the digital age.
Carretto's monogram design, intended for places where the primary logo wouldn't fit e.g., a social media profile picture, consists of the first and last letters of the logo joined together to create a capital “E”, the first letter of Carretto's real name.