Labor organizations go Results Found: 2 Button group with nested dropdown Plumbers & Pipefitters Local Union #1... Plumbers & Pipefitters Local Union #168 201 Front St. Marietta OH 45750 (740) 373-7965 Marietta Education Association Marietta Education Association 208 Davis Ave. PO Box 804 Marietta OH 45750 (740) 373-1055