There is a book called "Julius Evola e l'arte delle avanguarde - tra
Futurismo, Dada e Alchemia" (Fondazione Julius Evola, 1998, Roma)
which contains many paintings of Evola (about 20 in color and a few
others in black and white, but all of them in a great quality), some
texts of Evola about dadaïsm, and some articles about the dadaïst
period of Evola. I think that today it is the better book you can find
if you want to see Evola's paintings. You should also have a look at
his poem written in french "La parole obscure du paysage intérieur",
also edited by the Fondazione Julius Evola,and which have been
translated in english on the website Evola-as-he-is.