Please see below for instructions on how to count different kinds of material at Houghton:

General: Count cover to cover as separate pages, not as openings.

Overlays: Count twice – once for image with overlay & once without.

Fold outs: Count each fold to determine number of fold outs.

General: Count cover to cover as separate pages, not as openings.

Letters

General: Count only the sides with text, drawings, etc.

Bifolia: Count openings as one page.

Overlays: Count twice – once for image with overlay & once without.

General: Count both blanks and pages with text, drawings, etc.

Overlays: Count twice – once for image with overlay & once without.

Count rectos.

Count the verso only if stamped or non-library writing on the back.

Count rectos.

Count the verso only if non-library writing on the back.

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