
This anecdote apparently dates from 1864 Massachusetts Sunday School Teachers' Convention.
This has been portrayed to have been Lincoln's "reply" to an unnamed Illinois clergyman when asked if he loved Jesus, as quoted in The Lincoln Memorial Album — Immortelles (1882) edited by Osborn H. Oldroyd [New York: G.W. Carleton & Co. p. 366 http://books.google.com/books?id=pX5DEhCM9M0C&pg=RA10-PA366&lpg=RA10-PA366&dq=%22and+saw+the+graves+of+thousands+of+our+soldiers%22&source=web&ots=Alddnu8KL8&sig=IhhhPHp6tuB7FoiRI8c71w5NUH4#PRA10-PA365,M1
This incident must have appeared in print immediately after Lincoln's death, for I find it quoted in memorial addresses of May, 1865. Mr Oldroyd has endeavored to learn for me in what paper he found it and on whose authority it rests, but without result. He does not remember where he found it. It is inherently improbable, and rests on no adequate testimony. It ought to be wholly disregarded. The earliest reference I have found to the story in which Lincoln is alleged to have said to an unnamed Illinois minister, "I do love Jesus" is in a sermon preached in the Baptist Church of Oshkosh, Wisconsin, April 19, 1865, by Rev. W. W. Whitcomb, which was published in the Oshkosh Northwestern, April 21, 1865, and in 1907 issued in pamphlet form by John E. Burton.
William Eleazar Barton (1920) The Soul of Abraham Lincoln http://books.google.com/books?id=UDEOAAAAIAAJ&pg=RA1-PA208&lpg=RA1-PA208&dq=%22and+saw+the+graves+of+thousands+of+our+soldiers%22&source=web&ots=kDphIXKsy-&sig=GclPy5wecnvSuGHYO2R1bhb6lUQ. Further discussion appears in They Never Said It (1989) by Paul F. Boller & John George, p. 91.
Disputed