The product is a historical handbook titled "Shiloh National Military Park,TN. NAT. PARK SERVICE HIST. HANDBOOK #10. 1961." This handbook is associated with the National Park Service and specifically focuses on Shiloh National Military Park located in Tennessee. It was published in 1961 and provides historical information about the park, likely including details about its significance, historical events, and other relevant information for visitors or enthusiasts of national parks and historical sites.