This idea was championed by May Dickson Exall, who was the first president of the Dallas Public Library.
Της άρεσε αφτή η ιδέα της Μάι Ντίκσον Έξαλ (May Dickson Exall), της πρώτης Προέδρου της Δημόσιας Βιβλιοθήκης του Ντάλας.