  His publishing habits also drew attention. Seeking an outlet for longer papers and essays in the late 1970s, and wary of “profiteering” publishers, in the do-it-yourself spirit that infused much of Sylvan’s life he began publishing a number of pre-print series in the Research School of Social Sciences where he worked at the ANU. Beginning with work of the Canberra Logic Group, the “Yellow Series” (as it became known) included over twenty publications by Group members between 1978 and 1985. There followed other Series including work in logic, metaphysics, the philosophy of science and much of his own work in environmental philosophy. In total, there were over fifty such publications of which over half were Sylvan’s own work. The publications ranged from tens of pages to hundreds and could be purchased by post from the department for a few dollars. The largest, at just over one thousand pages (Exploring Meinong’s Jungle and Beyond), for example, was available in hardback for $10. Such anomalous publishing habits meant that a considerable amount of his work is now very hard to access (though, in some cases, republication through more usual channels is underway—e.g., Eckert (ed.) 2018; Hyde (ed.) 2019; and Weber (ed.) 2019).