[13] Many years after the war he rendered financial aid to fellow prisoners, his chum, artist Vander Weyde, and General Hayes. Author of several valuable works, he is now head of the publishing house of G. P. Putnam's Sons. [14] It was a special pleasure after the lapse of fifty years to meet Estabrooks at the Massachusetts Commandery of the Loyal Legion, where, without knowing of his presence, I had just made honorable mention of him in an address on prison life. [15] In my own case the prison experience was peculiar: it changed the course of my whole subsequent life. I had studied law, been admitted to the bar in two states, and "practiced" with fair success, "though," as a friend was accustomed to remark, "not enough to do much harm!" Many times one of the best men I ever knew, my father, had said to me at parting, "Do all the good you can." Much meditating while in the army and especially while in prison, I finally resolved to pursue an educational career. Of course I felt sadly the loss of years of study that might have better equipped me; but it seemed a duty. I had had some experience which, I thought, proved me not wholly unqualified. While a student in college and while reading law I had partly supported myself by giving instruction to private pupils and in the schools of General Russell and Mayor Skinner. Afterwards, before the war, I had taught Greek in the Worcester (Mass.) Academy; and English literature, Greek, and Latin for more than three years as principal of the Worcester public high school. I knew the vocation would be congenial. So I became principal of a state normal school, of two high schools, of a large academy; house chairman of a (Conn.) legislative committee securing the enactment of three school measures of importance; later, president of a college, professor in a theological seminary and in Cornell University; founder and for three years first president of the earliest and long the largest of the world's general _summer_ schools (which now in the United States number nearly 700); lecturer in many Chautauqua assemblies, colleges, vacation schools, and university extension centres; President of the State University of North Dakota; editor, with biographic sketches and copious notes, of many masterpieces as text-books in higher English literature; author of a history of my regiment; also of a treatise on _Voice and Gesture_, of many monographs and magazine articles mostly educational; associate founder and first president of _The Watch and Ward Society_; one of the directors and executive committee of the _American Peace Society_; director of the _Massachusetts Peace Society_; president of _The American Institute of Instruction_; translator, annotator, and essayist of _The Book of Job_; etc.