A family member has turned up a previously unknown trove of old photos.  One is of six young men with mandolins and guitars sitting in front of a banner that says "Grandinette Mandolin Club".  We'd like to identify the group.     The photo has a postcard back with a hand-written date July 18, 1917.  We don't recognize the faces, but we don't have alot from that era to compare with.  The family to whom the photos belonged lived in Brooklyn.  Family surnames were Cavagnaro and Glover.    I've searched for Grandinette Mandolin Club in various combinations via google, fultonhistory.com, Brooklyn newspapers, etc. with no success.  Does anyone have an idea of what Grandinette might refer to?   Or how/where else I might search?   Thank you,  Jeanne Torre