Saginaw Depot Preservation Corporation, established in 1989. SDPC is a non-profit established for the restoration and preservation of the Flint & Pere Marquette Potter Street Depot by helping to improve the inner-city community, and to maintain this historically significant structure while engaging and educating the community through the celebration of Saginaw’s unique place in Michigan’s railroading history. We hope this website will provide you with an insight into what we do and how you can be a part of it. More posts to come!