As a record of a crisis in the history of the world, these negatives are worth their weight in gold. Their value is such that they cannot be handled, except with great care, or removed for exhibition purposes. They are in a vault in Hartford, Connecticut, where the owner is very willing to allow the public, especially the Veterans of the Civil War, to examine them. It is desired to have the old negatives become of as much service to the public-at-large as possible and for this purpose is compiled this partial catalogue from the collection. Whenever the condition of the negative permits, Mr. Eaton is willing to allow the privilege of printing a proof. This is especially granted to Old Soldiers or Grand Army Posts who desire certain original photographs of scenes in which they participated. The service of this collection, inasmuch as it pertains to commendable purposes, is here extended to the American People who are no longer "Federal" and "Confederate." THIS is a partial list of the negatives in the Eaton Collection of Original Negatives taken on the Battlefields during the Civil War of the United States, under the protection of the Secret Service. They include all phases of army life. The cameras followed, not only the Eastern Army and the Army of the West, but accompanied the Naval Fleets and were present in many demonstrations. Veterans of the Civil War are cordially invited to visit Hartford and inspect these negatives. Proofs will be taken from any negative here registered, for Grand Army Veterans or Posts, providing sufficient reasons are given with the request, which should be sent direct to the owner of the collection, Mr. Edward B. Eaton, Hartford, Connecticut. ARMY OF POTOMAC APRIL, 1861, TO AUGUST, 1861. _Three Months' Campaign._ Long Bridge. Washington, D. C., L.7824. Christ church, Alexandria, where General Washington attended, S.2301. Marshall House, Alexandria, Va., S.1189. Slave-pen, Alexandria, Va., L.7264. S.1003, S.1174. Ruins of Norfolk navy-yard, 8.984. Ruins of Harper's Ferry arsenal, S.655. Ruins of bridge across Potomac River at Berlin, S.658. Fairfax court-house, S.298. Fairfax seminary, S.2322. Fairfax church, S.2323. Taylor's tavern, near Fall's Church, S.2320. Cub Run, S.307. Bull Hun, S.1111. Battlefield of Bull Run, S.1046. Ruins of stone bridge, Bull Run, L.7082, S.310, S.312. Sudley church, S.315, S.316, S.1017, S.1148. Sudley Ford, Bull Run, S.313, S.314. Thorburn's house, Bull Run, S.317. Matthews's house, Bull Run, S.318. Robinson's house, Bull Run, S.319, S.1176. Ruins of Henry's house, Bull Run, S.320. Headquarters of General Beauregard (confederate) at Manassas, S.327. Stone church, Centreville, S.302. Mrs. Spinner's house, near Centreville, S.308, S.309. Grigsby House (Stevens's house), near Centreville, S.1163, S.303. Soldier' graves, Bull Run, S.321.