41 Stunning Books exhibition - I sure wish full copies of these were online
There were others in the series, but searches on text below the caricatures is fruitless.
US Fish & Wildlife Service in the 1970s to produce a series of illustrations.
From their homesite, put 'raver' in the search field and then 'raver'
into the 'creator' field of the subsequent page.
This will bring up 65 glorious thumbnail images, available in supersize.
etching and acquatint
at the Grabados (Revolucionarios) website