My grandfather, Abraham de Groot, made lots of slides on his holidays. Check them out, there are lots of windmills, farms, flowers, holidays in Suisse and South Africa (visiting their son Wim de Groot). The woman on the slides is of course my grandma, Johanna Hendriksen. Sort of gives me the giggles to see her appearing again and again. But hey, look what the selfie-generation does nowadays.