Back in about 1910, cards that provided a humorous stereotypical view of Dutch (and sometimes Germans) were very popular. As far as I can tell, the humor was well intended. These cards were all sent to Cora Huffsmith of Dushore, Pennsylvania. According to Conover Genealogy, Cora Huffsmith, born in Pennsylvania in 1891, was the 8th great-granddaughter of Wolphert Gerretse Van Kouwenhoven, a baker from Utrecht, Netherlands. Friends and family must have sent her these cards because of her Dutch heritage.
Here are ze backs of de cards in ze same order: