I have a particular personal interest in the book in that my paternal grandmother's maiden name was SZUREK. Alex's father and grandfather had links with Dobra/Kolo/Konin and "my" SZUREK's came from this area. While researching FAYFER's in Kalisz, I noticed in the records for 1841 the marriage of Izrael SZUREK from Dobra to Kajla PERLE. From his parents' names, Izrael appears to be the brother of my great, great grandfather Jakob SZUREK. What I have yet to establish is whether there is a link to Alex and if this derives from Izrael SZUREK or other members of the family who continued to live in the Dobra/Kolo area. 

Judy WOLKOVITCH first drew the book to my attention since Alex' mother's maiden name was WOLKOWICZ and we believe there are family links both in Kolo and Kalisz (though we have yet to confirm these.) 

The book has an extensive (460) name index (reproduced below) though unfortunately  it does not have page references. It contains both family names and "comrades in arms" from the Spanish Civil War. It therefore includes a number of well known people such as Malraux, Hemingway and Malinovski. 

Martin Sugarman, the Assistant Archivist at AJEX (Association of Jewish Ex-Service Men and Women) has used the index to extend the list he is creating of Jewish soldiers who fought in the Spanish Civil War. 

If anyone knows any of Alex's descendants/relatives (possibly living in Israel, France or the US) I would be grateful if you could put me in touch with them.