Vasara-Aaltonen, M. “Legal advice for workers: K.J. Ståhlberg’s and Einar Böök’s activity as secretaries of the Helsinki board for workers’ affairs 1904-1913”. Historiallinen Aikakauskirja, vol. 121, no. 1, Apr. 2024, pp. 34–51, doi:10.54331/haik.122967.