Have no idea of it's source which records 36,846 colored deaths.
George Martin
General Statistics of the Great Rebellion.
Number of enlisted men for Union army 2,859,132
Number of drafted men who served 46,347
Number of substitutes who served 54,304
Number exempt on payment of $300 86,724
Sailors and Marine enlistment 132,554
Death of Sailors and Marines 4,900
Number of West Point Graduates, Union 917
Number of West Point Graduates, Confederate 283
Distinct battles and engagements 2,262
Union soldiers shot dead in battle 44,238
Union soldiers died of wounds 49,205
Union soldiers died of disease 186,216
Died of unknown causes 24,186
Suicide, homicide and executions 526
Union soldiers confined in Southern prisons 188,145
Of which were paroled or exchanged 94,073
Of this number died before reaching home 11,599
Died in prison 94,072
Union soldiers present for duty at close of the war 797,807
Total number of deaths of union soldiers 359,528
Of this number were colored soldiers 36,846
The age of the majority of Union soldiers was 18 years; 75 per cent were American born, 9 per cent Germans, 8 per cent Irish. Average weight 145 pounds; 48 per cent were farmers.
No correct statistics can be given of the confederate army-records destroyed. The total expenditures of the United States from January 1,1862, to January 1, 1866, were $3,872,395,364.
Hamilton, Andrew G., Story of the Famous Tunnel Escape from Libby Prison. Chicago, 1893(?)
STORY OF THE
FAMOUS
Tunnel Escape
FROM
Libby Prison
AS TOLD BY
MAJOR A. G. HAMILTON,
ONE OF THE PROJECTORS.
PUBLISHED BY
S. S. BOGGS.
Author of “Eighteen Months a Prisoner under the Rebel Flag.”
Libby Prison Museum, Chicago, Ill.
COPYRIGHTED.
[http://www.mdgorman.com/Prisons/Libby/story_of_the_famous_tunnel_escap.htm]