Hi xwordfan; the author's name only appears after replacing the thematic.
Hi jogamel; if you have the correct author and Google, only 1 of his works includes the name of what all the thematic are examples of and the title tells you what to do. If you also Google the 5 letter word from the coloured squares + the name of what all the thematic represent you'll see its function which alerts you further on the nature of some of the replacements.