This document was published in the US without copyright notice at a time when such notice was required to secure copyright. It therefore passed into the public domain upon initial publication (and in any case all possible copyright in the US from 1920 has expired). This digital reprint remains in the public domain.
Instructional brochure on cleaning the 1E composition casting molds for the Lanston Monotype Machine Company composition typecaster. Single sheet folded to give 16 pages. Printing code: 8094-8-21-1M-2.
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Scanned 1200dpi rgb; converted to 600dpi JPGs for upload.