Sketches, drawings and lithos of his first wife Ali and their children Marco, Tom, Mirjam and Rita (stepdaughter)
Making a drawing of his son Tom (who was on a visit to the Netherlands ca. 1975). In the background Koolen's youngest daughters playing cards.
Sketches and drawings of his children from his second marriage in their childhood: Harry jr, Lucas, Marijke en Hanneke
Some drawings of his family-in-law
Marike Snoek, daughter of Snoek-Mous
Sketch of Mrs. Snoek-Mous (ca. 1950-55)