Architecture's Pritzker Prize medal is based on designs by Louis Sullivan, "father of" this type of soaring building
He continues, In 1967, we acquired an unfinished building which was to ... 
Laureates of the Pritzker Architecture Prize receive a $100,000 ... Ceremony And 
Medal ... of the Pritzker Architecture Prize is based on designs of Louis Sullivan, 
... architect generally acknowledged as the father of the skyscraper.