National Association Of Letter Carriers

National Association Of Letter Carriers is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Labor Organizations
• Mailing Services

North American Industry Classification System (NAICS) Categories:

• Local Messengers And Local Delivery
• Labor Unions And Similar Labor Organizations

Standard Industry Classification (SIC) Categories:

• Courier Services, Except By Air > Mailing Services
• Labor Unions & Similar Labor Organizations