Many of the reference resources include encyclopedias, dictionaries, handbooks, and companion texts. All of these will include bibliographies and other listed resources.
Companion texts are collections of scholarly essays meant to provide an introduction to the scholarship of a subject. Each includes its own bibliography, and each essay in a companion text is by a different scholar in the field. Companion texts will include indexes, as well, and many are available online.
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Butler Library at Columbia has over 19,000 circulating titles of comics and graphic novels. The comics collection is located together on the 4th floor of Butler, in Milstein rooms 406a, 406, and 409 on the West side of the building.