The attached presentations were given during the online webinar "Navigating (Diamond) Open Access Book Publishing: Four perspectives on how, why and where" on November 5th, Amsterdam time. The event, organized by the Diamond Open Access Expertise Center as part of the program Strengthening Diamond Open Access in the Netherlands, was aimed at researchers interested in Open-Access Book Publishing. Program: 12:00 – 12:05 Welcome by Maria Constantin (Diamond OA Expertise Center) 12:05 -12:15 Introduction on the topic of Open Access book publishing by Beatriz Ferreira, Open Access Officer at Tilburg University 12:15-12:25 New University Presses in the Netherlands by Margreet Nieborg, Head of the University of Groningen Press 12:25-12: 35 Open Book Publishers by Lucy Barnes, Editor at Open Book Publishers 12:35 -12:45 Author perspective on Diamond OA publishing by Prof. Dr. Ingrid Robeyns at Utrecht University 12:45-13:00 Questions