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Informational Letter 0017-2008 (CE-1435)
Scenic and historic districts.
Updated: December 1, 2025.
Informational Letter 0016-2009 (CE-1445)
Clarifications on permitting and engineering requirements for on-premise and off-premise signage.
Informational Letter 0018-2009 (CE-1438)
Clarification on acknowledgement forms for changeable message and high technology signs
Updated: December 1, 2025.
Informational Letter 0019-2009 (CE-1437)
Attention getting devices.
Updated: December 1, 2025.
Informational Letter 0020-2010 (CE-1434)
Clarification on inflatable holiday devices and seasonal holiday displays.
Updated: November 2025.