Biology Today is a psychedelic 1972 textbook with amazing illustrations
and photos by Earnie and Helga Kolla (above)
Masami Teraoka, chapter title page, Human Sexual Behavior
Richard Oden, chapter title page, Animal Hormones
Karl Nicholason, chapter title page, Specialized Cells and Tissues
Source: one of my favourite blogs AJourneyAroundMySkull
