[3] From 1947 to 1982, Brinkler worked at Widener Library as head of classification and cataloging.

Brinkler also served as a "consultant on classification (…this included the construction of a special classification system & supervision of reclassification for Dumbarton Oaks Research Library, Washington, DC, [19]59-60, and J.K.Kennedy-Institut für Amerikastudien".

[4] He devised a modification of the Library of Congress Classification system, known as the Brinkler classification system, to bring out better the geographical aspects of the subject in the context of a card catalog.

He is remembered in the Princeton Alumni Weekly as a "quiet librarian".

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