Gretha Velleman worked in a Bata shoe shop in Van Swindenstraat in Amsterdam.
Addition of a visitor of the website
For additional information on Gretha Velleman see:
R. Lindenman Straatrumoer en twee minuten stilte (Amsterdam 1998) 39;
D. Mulder en B. Prinsen Kinderen in kamp Westerbork (Hooghalen 1994) 51