Officially the 'Fondazione J. Evola' and its catalogue are not available any more since one year ago, when they vanished from the net, but many texts are distributed by other publishers, mainly
www.libreriaeuropa.it together with the titles from Settimo Sigillo; the quoted book or more probably another version of it (here the poem in French is not enclosed but it is a title apart), as "Scritti sull'arte di avanguardia", Fondazione J. E., Roma 1994, 108 pages, is apparently enclosed in the mail-order catalogue.
In spite of it, in the beginning of December 2005, an exhibition-convention on the paintings of Evola took place in Reggio Calabria just with the contribution of the Fondazione itself, in the person of Gianfranco De Turris, who lectured 'Introduzione alla ‘sconveniente’ figura di Evola' (Introduction to the 'unbecoming' figure of E.); so, the situation is not yet clear.
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.