[1] In 1963, while attending Cranbrook, Poska was introduced to papermaking by Laurence Barker, the dean of the school's graphics department.
[4] In 1967, he purchased his first "beater", a machine that grinds rags and pulp in the initial step of producing handmade paper, and established his lithography studio the Fishy Whale Press.
[3] At the time, his lithography press was among the largest in the United States, using 600 pounds (270 kg) blocks of stone.
[3] Poska continued to develop The Great Human Race as a perpetual art and philosophy project for over 30 years.
[9] In his later years, Poska became an outspoken activist for equality and common human rights,[1] and was a frequent speaker at Rockford town hall meetings.