Subjects
- Account books1
- Aqueducts1
- Canal aqueducts1
- Canals1
- Cast-iron1
- Cement1
- Chemical industry1
- Church buildings2
- Civil War - Ohio 16th Infantry.1
- Civil War - Union soldiers' letters.1
- Civil War - Union soldiers.1
- Civil War - soldier's letters.1
- Civil War -- letters1
- Civil War -- Camps and camp life1
- Civil War -- Charleston1