Series Title (Agency Series #): Description, Retention (Legal Citation)

Director's Correspondence (DOH31-001): Correspondence, memoranda, and similar records which state or form the basis of policy, set important precedents, or record historic events related to the organization or operation of the division. Includes letters sent and received, memoranda, notes, reports, studies, and other records.
Retention: Retain permanently. (MOAR 166-150-0005(8))

Fluoridation Records (DOH31-002): Documents the background of fluoridation initiatives in Portland, most notably a failed effort in 1978 to approve fluoridation of the Portland water supply. Records include surveys, polls, studies, correspondence, research material, task force records, legal opinions, court case records and related material.
Retention: Retain permanently. (MOAR 166-150-0005(8))