Eastern National, a regional cooperating association, partners with Vicksburg National Military Park to provide bookstore operations in the park's Visitor Center on Clay Street, and the USS Cairo Museum located halfway through the park tour.

In addition, the Vicksburg Convention and Visitors Bureau provides visitors with city and area information, and assists with licensed park guide reservations and tours.

Although there are no commercial or vending services inside the park, these can be found locally in the surrounding Vicksburg area. Check with the desk rangers for specific locations of these services.