Mike re your search for the Battlefields Pilgrimage book, I did a quick check on Abe Books and found this, but suspect it is the one you already have based on the blue cover.
https://www.abebooks.com/servlet/Sea...1928&kn=&isbn=
And found this on eBay, but again not the 1928 version.
https://www.ebay.co.uk/itm/Royal-Bri...EAAOSwXvRgEH7A
Will advise if I run across a copy.
Terry