Group of 21 Postcards of Jewish Life in Europe in the Early 20th Century

Postcard collection. Some are in color and some are in black-and-white, depicting the spiritual life of Jews in Europe at the beginning of the 20th century.
Highlights: children studying in cheder; lamentations on Tisha B'Av; a Jew holding the four species; Seder night; Rachel's Tomb and more. Some are in color.
[21] postcards, some in color. Overall very fine condition.