Great-grandfather Linkov Judko ben Samson and Esther-Malka bat Peisach married in 1909.

Great-grandfather was a photographer in Cherkasy (studied in Warsaw), and great-grandmother was a midwife (graduated in Kyiv in May 1908).

According to the website Beket among two hundred subscribers of the telephone network in the city of Cherkasy for the year 1909 had their own telephone great-grandfather («Linkov phot.», i.e. photographer) and great-grandmother («Linkova M. P.», i.e. Malka Peisach).

Great-grandfather needed the phone for work, to arrange the location and time for photo shoots. And great-grandmother was called by phone to deliver babies.