21. Benjamin E. Cook Creator: Lovell Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
22. C. C. Tracy Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
23. C. C. Waldbridge Creator: A. J. Schillare Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
24. C. D. Bardwell Creator: Lovell Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
25. C. E. Billings Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
26. C. E. Moffitt Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
27. C. H. Daniels Creator: A. J. Schillare Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
28. C. H. Hayden Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
29. C. H. Walker Creator: Lovell Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
30. Calvin B. Kingsley Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
31. Calvin Hosford Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
32. Card, Calling Format: Postcards/Cards Collection: Arlington Historical Society Collection Institution: Arlington Historical Society
33. Chancy Guilford Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
34. Charles C. Westover Creator: F. Schadee Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
35. Charles E. Bushee Creator: A. S. Vose Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
36. Charles E. Crittenden Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
37. Charles E. Sidell Creator: Sheldon Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
38. Charles E. Stevens Creator: Knowlton Bros Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
39. Charles H. Bigelow Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library
40. Charles H. Heald Format: Postcards/Cards Collection: Grand Army of the Republic Institution: Forbes Library