Read part of a letter.
To Hampton County Department of Agriculture:
Our 4-H club would like to start a neighborhood garden. A local church has offered us a plot of land, and we have volunteers to create the garden. Before we begin, we would appreciate any brochures or flyers that your office might have about sustainable crops for this region. We would like to grow a variety of vegetables and fruits, but we need your expertise.
What describes the type and purpose of this letter?