This 21 page case study from 2007 is from the New York Department of State, and it looks into a wide variety of very successful shared services partnerships between the Town of Lancaster and the Village of Lancaster, NY.  The topics addressed include:

• General Government—Records Management/Administration, Village and Town of Lancaster;
• Financial Services—Building Inspections Services, Village and Town of Lancaster;
• Financial Services—Assessing Services, Village of Lancaster and Town of Lancaster and Village of
Depew and Town of Lancaster;
• Parks and Recreation—Summer Youth Recreation Program, Village and Town of Lancaster;
• Health and Human Services—Youth Court Program, Town of Lancaster and Village of Depew;
• Public Safety—Animal Control Services, Village and Town of Lancaster and Town of Lancaster and
Village of Depew;
• Public Safety—Police Services, Village and Town of Lancaster;
• Public Works—Community Development, Village and Town of Lancaster

As drawn from here.