Alps and Sanctuaries of Piedmont and the Canton Ticino

I should perhaps apologise for publishing a work which professes to deal with the sanctuaries of Piedmont, and saying so little about the most important of them all— the Sacro Monte of Varallo. My excuse must be, that I found it impossible to deal with Varallo without making my book too long. Varallo requires a work to itself; I must, therefore, hope to return to it on another occasion.