Code of Federal Regulations Title 36. Parks, Forests, and Public Property § 36.1237.22 What are special considerations in the storage and maintenance of cartographic and related records?

(a) Maintain permanent and unscheduled cartographic, architectural, and engineering records in an environment that does not exceed 70 degrees Fahrenheit and with relative humidity under 50%.

(b) Create an identification scheme for each series and assign unique identification designations to each item within a series.

(c) Maintain lists or indexes for each series with cross-references to related textual records.

(d) Avoid interfiling separate series of maps, charts, or drawings, and file permanent cartographic and architectural records separately from temporary series unless hand-corrected versions have been systematically filed with other published maps in a central or master file.

(e) Avoid rolling and folding maps and drawings. Store permanent maps and drawings flat in shallow drawer map cases in acid-free folders.

(f) Do not laminate original oversize records. Consult NARA for preservation, storage, and treatment options, by mail at National Archives and Records Administration;  Preservation Programs (RX);  8601 Adelphi Road;  College Park, MD 20740–6001.