There are situations where a public library wishes to enter into a formal agreement with another library or government agency to provide or share a service. In these situations, the creation of a so-called “28E” agreement can be beneficial. Chapter 28E of the Iowa Code is titled “The Joint Exercise of State Powers” and allows agencies to cooperate in different ways. An example is Dubuque County public libraries, which created an “agency” through a 28E agreement. “The agency is a public institution made up of public libraries in the city of Dubuque, Iowa, the city of Dyersville, Iowa, Cascade City, Iowa and Dubuque County, Iowa, which is recognized under Chapter 28E of the Iowa Code and organized to provide library services.” By the agreement, libraries agreed on the rate calculated for the provision of library services to cities without libraries. Other examples may be the sharing of staff, facilities or facilities between a public library and another government agency. Iowa code 28E describes the parameters of such an agreement.