Remember that you probably won't find information about your organization or agency in the professional literature.
Try to think about the population it serves, the problems it addresses, and the services it provides; be creative in thinking about alternate ways to express the name or mission of your organization.
If you were volunteering at the Preble Street Resource Center, for example, you might search:
Following is a selected list of databases which cover social work and related fields. Many of these databases include citations and abstracts only; to check for the availability of articles, use Article Linker.
IMPORTANT NOTE: With rare exceptions, you won't find information on specific local agencies in scholarly journals. To look up information about your service learning site other than their website or what you have been given, try Maine Newsstand, which provides indexing and full text of several Maine newpapers.