Her art and writing became well known outside of the UK, and throughout the 70s, 80s and 90s she had extensive correspondence with influential American writers, artists and pagans such as Jean & Ruth Mountaingrove, Starhawk, Zsusanna Budapest, Lucy Lippard, Alice Walker, and Judy Chicago. (en.wikipedia.org)
In most cases experts plough a solitary furrow, their reports repeatedly challenged by extensive correspondence (often without the court's permission). (newlawjournal.co.uk)
Berkson's archive of literary, artistic and other materials, including extensive correspondence and collaborations with O'Hara, Guston, Brainard, Mayer and others through the years is maintained in the Special Collections at the Thomas J. Dodd Research Center, University of Connecticut, Storrs. (en.wikipedia.org)