W. H. Bixby to Thomas Lincoln Casey, September 2, 1890

W. H. Crain to Thomas Lincoln Casey, February 10, 1890

W. H. Crain to Thomas Lincoln Casey, July 10, 1891, telegram

W. H. Crok to Thomas Lincoln Casey, January 3, 1885

W. H. H. Miller to Stephen Benton Elkins; copy to Thomas Lincoln Casey, August 30, 1892

W. H. Kell to Thomas Lincoln Casey February 4, 1891; Thomas Lincoln Casey to M. C. Martin, February 9, 1891; Thomas Lincoln Casey to Kell, February 9, 1891

W. H. Kell to Thomas Lincoln Casey, April 13, 1891

W. H. Kell to Thomas Lincoln Casey, February 11, 1891

W. H. Kell to Thomas Lincoln Casey, January 11, 1891

W. H. Kell to Thomas Lincoln Casey, January 22, 1891

W. H. Kell to Thomas Lincoln Casey, January 23, 1891

W. H. Kell to Thomas Lincoln Casey, January 24, 1891

W. H. Kell to Thomas Lincoln Casey, January 9, 1891, telegram

W. H. Kell to Thomas Lincoln Casey, March 16, 1891

W. H. Rearden to Thomas Lincoln Casey, February 6, 1885

W. J. Barnard to Thomas Lincoln Casey, March 18, 1879

W. J. Hoffman to Thomas Lincoln Casey, March 6, 1885

W. J. Sloane to Thomas Lincoln Casey, October 22, 1888, telegram

W. J. Twining to Thomas Lincoln Casey, August 14, 1877, special orders

W. J. Twining to Thomas Lincoln Casey, August 6, 1877

W. J. [William Joyce] Sewell to Thomas Lincoln Casey, March 14, 1888 (1)

W. J. [William Joyce] Sewell to Thomas Lincoln Casey, March 14, 1888, telegram (2)

W. L. Aughinbaugh to Thomas Lincoln Casey, February 24, 1885

W. L. Marshall to Thomas Lincoln Casey, November 17, 1890

W. L. Marshall to Thomas Lincoln Casey, November 25, 1890

W. L. Whitehouse to Thomas Lincoln Casey, June 20, 1878

W. M. Greene to Thomas Lincoln Casey, February 14, 1896

W. M. Laffan to Thomas Lincoln Casey, December 8, 1884, Telegram

W. MacLennan to Thomas Lincoln Casey, August 25, 1889

W. Maxwell Greene to Thomas Lincoln Casey, January 2, 1890

W. Maxwell Greene to Thomas Lincoln Casey, March 18, 1885

W. Mitchell to Thomas Lincoln Casey, November 27, 1869

W. N. Nash to Thomas Lincoln Casey, July 16, 1888

W. P. Ballinger to Thomas Lincoln Casey, December 15, 1884

W. P. Duvall to Thomas Lincoln Casey, August 4, 1888

W. P. Hepburn to A. C. Matthews, August 17, 1889

W. P. Hepburn to A. C. Matthews, August 17, 1889, copy

W. P. McCann to Thomas Lincoln Casey, December 31, 1885

W. P. Thornbridge to Thomas Lincoln Casey, November 3, 1890

W. P. Trowbride to Thomas Lincoln Casey, March 10, 1885

W. P. Trowbridge to Thomas Lincoln Casey , February 2, 1887

W. P. Trowbridge to Thomas Lincoln Casey, August 3, 1888

W. P. Trowbridge to Thomas Lincoln Casey, July 31, 1888

W. R. Babcock to Thomas Lincoln Casey, August 2, 1888

W. R. Livermore to Thomas Lincoln Casey, August 14, 1888

W. R. Livermore to Thomas Lincoln Casey, August 3, 1888

W. R. Livermore to Thomas Lincoln Casey, October 31, 1887

W. S. Cox to Thomas Lincoln Casey, undated [November 1889]

W. S. Larner to Thomas Lincoln Casey, March 28, 1885

Tunnel Estimate, undated