The Smithsonian Inventory (
visit link) provides the details about the monument:
"Artist:
Brooks, Richard Edwin, 1865-1919, sculptor.
J. J. Horgan, fabricator.
Gruet, founder.
Title:
Colonel Thomas Cass, (sculpture).
Dates:
Cast 1899. Dedicated September 14, 1899...
Medium:
Sculpture: bronze; Base: Red Beach, Maine granite.
Dimensions:
Sculpture: approx. 8 ft. x 2 ft. 4 in. x 2 ft. 4 in.; Base: approx. 6 ft. 6 in. x 3 ft. 8 in. x 3 ft. 8 in.
Inscription:
(On proper right side of sculpture, bronze base:) R. E. Brooks . Sculpt. 1899 (On rear of sculpture:) E. Gruet Jne Fondeur Paris (On front of base:) THOMAS CASS/COL NINTH MASS/INFANTRY USV/FELL AT MALVERN/HILL VIRGINIA/JULY FIRST 1862 (On rear of base:) ERECTED BY THE CITY OF BOSTON/IN MEMORY OF THE OFFICERS/AND MEN OF THE NINTH REG/MASS VOLUNTEERS/ORGANIZED MAY 3, 1961/MUSTERED OUT JUNE 21, 1864 signed Founder's mark appears.
Description:
A standing portrait of Thomas Cass with his arms folded across his chest. He is dressed in his Civil War uniform that originally included a sword which is now missing. The sculpture rests on a square base adorned with a bronze wreath and a bronze palm branch on the front upper left corner."
and Wikipedia (
visit link) informs us about the man:
"Colonel Thomas Cass (1821 – July 12, 1862) founded and was commander of the 9th Regiment Massachusetts Volunteer Infantry of the Union Army, which saw extensive service in the American Civil War. Cass was wounded at the Battle of Malvern Hill and died shortly after from his wounds in Boston, Massachusetts. A memorial statue to him stands in the Boston Public Garden.
Service with the 9th Regiment
Establishment
The Ninth Regiment was created on June 11, 1861 under the command of Colonel Cass in Boston, recruiting primarily Irish-Americans. Initial funding for the regiment came from Patrick Donahoe, publisher of the Boston Pilot. Initially bivouacked at Boston's Faneuil Hall, they later camped at Long Island in Boston Harbor.
Potomac duty
On June 30, 1861, the unit arrived in the Washington, D.C. vicinity and was welcomed by President Abraham Lincoln. They remained in the vicinity of Arlington, Virginia performing picket duty and built a fort on the Potomac River named Fort Cass after their commanding officer. As a unit of the Army of the Potomac under the command of Major General George B. McClellan, the Ninth Regiment moved south with the rest of the Army in pursuit of Confederate forces.
Battle of Mechanicsville
On June 26, 1862 the Ninth Regiment participated in the Battle of Mechanicsville, about six miles from Richmond Virginia, which resulted in a Union Army victory and more than 2,000 Confederate casualties. The next day, the regiment was assigned to hold the bridge over the mill creek in the action that later became known as the Battle of Gaines Mill. The regiment was ordered to hold the bridge pending the arrival of two supporting regiments. The support troops were delayed in their arrival, and the Ninth Regiment successfully repelled several Confederate assaults on the bridge. The supporting troops eventually arrived, but by this point the opposing forces had built their strength and the Ninth was unable to hold the bridge any longer. Eventually, Confederate forces led by General James Longstreet and General Ambrose Powell Hill, broke the Union line, forcing the Union Army into retreat. The Ninth Regiment brought up the rear of the retreat, fighting a rearguard action against the opposing forces. The Union Army lost 6,000 killed or wounded in this battle and the Ninth Regiment’s casualties totaled 252 men.
Wounded at Malvern Hill
The Ninth Regiment participated in the Battle of Malvern Hill on July 1, 1862 as part of the Peninsular Campaign waged by the Union Army intending to capture the city of Richmond, Virginia. The Ninth Regiment held the hill and prepared it to withstand a siege by the Confederate Army. Supported by five Union gunboats on the nearby James River, and benefiting from favorable geography and extensive defensive preparations, the Union Army withstood repeated charges and inflicted heavy casualties on the Southern forces. It was in this battle that Colonel Cass received the mortal wound in his face and mouth that eventually took his life. When Colonel Cass fell in battle, command of the Ninth Regiment was assumed by Acting Lieutenant Colonel Hawley and Cass was removed from the field. Colonel Hawley was subsequently wounded in the same action, and command fell to Acting Major, Captain O’Leary. The unit’s casualties were very heavy; along with losing their two top commanders, roughly half the regiment was put out of action, totaling 166 men.
Death and burial
The Ninth Regiment was assigned a camp-ground at Harrison's Landing, and on 4 July 1862, General McClellan reviewed the army. On 8 July 1862, President Lincoln made a visit to the camps, and reviewed the army by moonlight. He died in Boston, July 12, and his funeral was attended by Lieutenant-Colonel Guiney, Major Hanley, and other men of the Ninth who were home on sick leave. About this time, the men of the Ninth Regiment heard of his death. Colonel Cass was buried with military honors at Mount Auburn cemetery, and his widow and children were the chief mourners.
Memorial
Some years after Col Cass' death, a memorial statue of him was placed in the Boston Public Garden. It was, however, so roundly criticized for its lack of artistic merit that the Society of the Ninth Regiment commissioned sculptor Richard E. Brooks to create a new bronze statue of the Colonel. The new monument was unveiled on September 22, 1899. Brooks received a gold medal for the statue underscoring the improvement on the original. This statue may be seen today on the south walk of the Public Garden."