Cooper Black is not exactly known for its scary qualities (unless your ink cartridge runs low). Charles Keeping’s illustration hence has to do all the heavy lifting for conjuring the creepiness, together with the ominous repetition in the title. The latter is a trademark of the various horror anthologies compiled by Helen Hoke, see also Monsters, Monsters, Monsters and Creepies, Creepies, Creepies.
Weirdies, Weirdies, Weirdies is “a horrifying concatenation of the super-sur-real or almost or not-quite real”, with stories by Charles Keeping, Arthur Conan Doyle, H.P. Lovecraft, August Derleth, Franz Kafka, Patricia Highsmith, E.M.B. Nakuina, Theodore Sturgeon, and others.
[More info on ISFDB]