I found these two clippings:
The second clipping is hard to read, it says:
The quarry gang of 13 overpowered Guard Jackson, took his gun aud fled to the hills. The party marched Jackson with them a mile. Then they let him go and stuttered. A trusty named Young witnessed tlie escape und hurried down to the prison and gave the alarm. A short time after the men had returned to work after the noon hour the guard stationed himself a short distance from them, as was his custom. He was armed with his rifle. He had not even suspected an attempt at escape, and he was overpowered so suddenly that he scarcely realized what had happened until he was absolutely in the power of the convicts. Cowen, who is considered the bad man of the gang, was the first to pounce down upon the guard, and he was instantly surrounded by four or five men with upraised sledge hammers, and in a moment Leavitt Rea vis had the guard's gun in his possession. Two of the escapes returned voluntarily, saying they went along only through fear. Six more were captured before dark. Jackson has refused to make any statement about the manner in which he was caught. It is said that a convict hurt his hand. When Jackson undertook to bind it up with his handkerchief the prisoners closed in on him and got his gun before he realized what was taking place. The convicts that escaped were: William Black, Shoshone county, sentenced to 12 years for assault with intent to commit murder; Zell Morris, Lemhi county, 11 years for robbery; Arthur Fountain, colored. Latah county, 20 months for selling liquor to Indians; Albert Randall, Custer county, 20 years for the crime against nature; Pat Sullivan, Bingham county, three years for misting an officer; Harvey Cole, 14 years for robbery ; Robert Oowon, Lincoln county, 18 months for grand larceny; Kd Russen, Ada county, four years for burglary ; William Edwards, Bannock county, 10 years for robbery; Leavitt Reavis, Bannock county, two and a half year for burglary -, Clarence Hoyt, Ada county, 10 years for perjury; Thomas Broady, Latah county, five year» for burglary; Prank Erdmiin, Ada county, one year for assault with a deadly weapon. Black and Morris returned voluntarily. Those still at large are KuUivan, Cole, Cowen, Edwards and Reavis. Three More took off for. Boise, Idaho, March 21.—Three more of the escaped convicts were captured yesterday morning. They were on Indian creek, about four miles from Nampa. Two of them were discovered by two boys. They were hiding in a gulch. One of the boys posted off to town to notify an officer, while the other kept watch. Deputy Sheriff Hamilton went out and got the men, anu found the third one nearby. The convicts captured were Reavis, Cowen and Edwards. This leaves only two out, Harvey Cole and Sullivan.
He had also been arrest for Intoxication and thrown in jail before his 1895 conviction.
I didn't find any records or newspaper articles after 1915.