Hedwig Heinsman at Map Fest / Ignite Amsterdam #1, July 9 Delen Facebook Twitter LinkedIn Pinterest Email download Willem Velthoven asks Hedwig Heinsman a question after her presentation at Ignite Amsterdam #1. Map Fest evening 3. Mediamatic Bank. July 9, 2010. Met: Hedwig Heinsman, Willem Velthoven Waar is dit gemaakt? Ignite Amsterdam 1
