2019 Invited Lecture, ` Trading not in images but imperatives�: Robert Collis�s Marrowbone Lane (1939) at the Gate as Theatre for Social Change . The Gate: Alternative Histories, Marginal Identities�, Charles University, Prague 14 June 2019, Invited Lecture, `What is Youth and Social Circus�, Sorin Sirkus, Tampere, Finland, 12 December