The principles and experience gained by a number of students while attending college in Oberlin did not come amiss later when these young men established themselves in Iowa. Professor L. F. Parker, after describing what was probably the longest line of travel through Iowa for escaped slaves, says: "Along this line Quakers and Oberlin students were the chief namable groups whose houses were open to such travellers more certainly than to white men,"[67] and the Rev. William M. Brooks, a graduate of Oberlin, until recently President of Tabor College, writes: "The stations ... in southwestern Iowa were in the region of Civil Bend, where the colony from Oberlin, Ohio, settled which afterwards settled Tabor."[68] [67] Letter from Professor L. F. Parker, Grinnell, Iowa, Aug. 30, 1894. [68] Letter from President W. M. Brooks, Tabor, Iowa, Oct. 11, 1894. The origin of the Underground Road dates farther back than is generally known; though, to be sure, the different divisions of the Road were not contemporary in development. Two letters of George Washington, written in 1786, give the first reports, as yet known, of systematic efforts for the aid and protection of fugitive slaves. One of these letters bears the date May 12, and the other, November 20. In the former, Washington speaks of the slave of a certain Mr. Dalby residing at Alexandria, who has escaped to Philadelphia, and "whom a society of Quakers in the city, formed for such purposes, have attempted to liberate."[69] In the latter he writes of a slave whom he sent "under the care of a trusty overseer" to the Hon. William Drayton, but who afterwards escaped. He says: "The gentleman to whose care I sent him has promised every endeavor to apprehend him, but it is not easy to do this, when there are numbers who would rather facilitate the escape of slaves than apprehend them when runaways."[70] The difficulties attending the pursuit of the Drayton slave, like those in the other case mentioned, seem to have been associated in Washington's mind with the procedure of certain citizens of Pennsylvania; it is quite possible that he was again referring to the Quaker society in Philadelphia. However that may be, it appears probable that the record of Philadelphia as a centre of active sympathy with the fugitive slave was continuous from the time of Washington's letters. In 1787 Isaac T. Hopper, who soon became known as a friend of slaves, settled in Philadelphia, and, although only sixteen or seventeen years old, had already taken a resolution to befriend the oppressed Africans.[71] Some cases of kidnapping that occurred in Columbia, Pennsylvania, in 1804, stirred the citizens of that town to intervention in the runaways' behalf; and the movement seems to have spread rapidly among the Quakers of Chester, Lancaster, York, Montgomery, Berks and Bucks counties.[72] New Jersey was probably not behind southeastern Pennsylvania in point of time in Underground Railroad work. This is to be inferred