George W. McCrary to Thomas Lincoln Casey, May 20, 1878

George Whitman Casey to Thomas Lincoln Casey, April 27, 1890

George Whitman Casey to Thomas Lincoln Casey, February 12, 1890

George Whitman Casey to Thomas Lincoln Casey, February 16, 1890

George Whitman Casey to Thomas Lincoln Casey, January 10, 1890

George Whitman Casey to Thomas Lincoln Casey, January 2, 1890

George William Douglas to Thomas Lincoln Casey, May 19, 1890

George [illegible] to Thomas Lincoln Casey, March 28, 1891

George [Whitman] Casey to Thomas Lincoln Casey, November 30, 1889

George [Whitman] Casey to Thomas Lincoln Casey, November 30, 1889

Georgia Moore de Fontaine to Thomas Lincoln Casey, February 21, 1891

Goodloe to Thomas Lincoln Casey, January 26, 1891

Goodrich patent to Thomas Lincoln Casey, May 12, 1885

Gowanus Bay history, Thomas Turtle, October 12, 1892

Granite Contracts Memoranda: ""A"": Opinion of the Attorney General in the matter of ""Fifteen Per Cent."" Contracts, April 27, 1876

Granite Contracts Memoranda: ""B"": Opinion of the Attorney General in the matter of ""Fifteen Per Cent."" Contracts, April 27, 1876

Granite Contracts Memoranda: General Meigs on 15 per ct Contracts, April 2, 1877

Graph, Water flow for various pipe sizes, undated

Gray & Hayes to Thomas Lincoln Casey, October 4, 1877

Green to Thomas Lincoln Casey, March 2, 1896

Gregory to Thomas Lincoln Casey, October 2, 1889

Grusonwerk to Thomas Lincoln Casey, November 18, 1890

Guest list with dinner partner pairing for dinner for Grand Duke Alexis, undated [April 1879]

Gulian Verplanck Weir to Thomas Lincoln Casey, February 11, 1885

Gustav E. Stechert to Thomas Lincoln Casey, February 16, 1883

Gustave A. Roedell to Thomas Lincoln Casey, July 14, 1885

Gustavis W. Smith to Thomas Lincoln Casey, May 9, 1891

Gwynne & Day to [Thomas Lincoln Casey], May 31, 1887

H. A. Mahan to Thomas Lincoln Casey, November 2, 1877

H. A. Mahan to Thomas Lincoln Casey, November 22, 1877

H. A. Preston to Thomas Lincoln Casey, undated [1885]

H. A. Willard to Thomas Lincoln Casey, April 22, 1878

H. B. Barnings to Thomas Lincoln Casey, January 29, 1877

H. B. Perry to Thomas Lincoln Casey, December 6, 1887

G. M. Edmunds to Thomas Lincoln Casey, June 12, 1878

G. M. Thomas to Thomas Lincoln Casey, November 10, 1885

G. Norman Lieber to Thomas Lincoln Casey, December 1891

G. Norman Lieber to Thomas Lincoln Casey, November 7, 1885

G. O. Austin to Thomas Lincoln Casey, March 16, 1896

G. R. Garretson to Thomas Lincoln Casey, December 31, 1890

G. S. Greene to Thomas Lincoln Casey, October 22, 1888

G. W. Chamberlen to Thomas Lincoln Casey, May 8, 1878

G.B. Dandy to John Byland through Thomas Lincoln Casey, January 23, 1891

Gardiner C. Sims to Thomas Lincoln Casey, January 28, 1887

Gardiner C. Sims to Thomas Lincoln Casey, July 24, 1888

Gene Terry to Thomas Lincoln Casey, February 21, 1885

General A. A. Humphreys to Thomas Lincoln Casey, January 8, 1879

General A. A. Humphreys to Thomas Lincoln Casey, July 19, 1869

General Alvord to Thomas Lincoln Casey, April 6, 1878

General Alvord to Thomas Lincoln Casey, December 18, 1877