Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: HUP nwere akara Belknap Press, nke o mepere na Mee 1954 site na mbipụta nke Harvard Guide to American History. A na-ebipụta usoro akwụkwọ John Harvard Library n'okpuru akara Belknap.  Ajụjụ: Olee mgbe e kere Belknap Press?
Mee 1954