Mack-Sumner Communications LLC is a company that provides printing, consulting services, telecommunications, public relations and advertising, and professional and technical services to nonprofit clients. They primarily provide their services regionally, with most clients in California (although they are present in other states as well).
Most Mack-Sumner Communications LLC clients are labor unions with revenues ranging from $10 million to $10 million.
Previous legal names, trade names, or just variations of their name include: Mack-Sumner Communications.
| Name | Type | Location | |
|---|---|---|---|
| 1 | AFL-CIO - California Labor Federation AFL-CIO | 501(c)(5) | Sacramento, CA |
Competitors to Mack-Sumner Communications LLC in the nonprofit sector include and Royall and Company.
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