Example excerpt from Digital Public Library of American Primary Source Sets:
Exploration of the Americas
Although conventional narratives often have begun this topic with the arrival of Christopher Columbus in 1492, it is critical to note the presence of an estimated 37 million inhabitants in North and South America at the time of European exploration. It is also important, given what we know about the varied peoples and civilizations of the Americas, and the aims and consequences of Europeans sailing to the Americas, to characterize this period not as “discovery” of the Americas but as “exploration,” “colonization,” and/or “conquest.”
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American Library Association Code of Ethics, Principal no. 9.
See also, Library Bill of Rights.