No Googling, no research of any kind has uncovered any suggestion Lincoln had been disinterred forty years ago.
Must have been the hot dogs I ate back then??...
:') There's only one known photo of Lincoln in the coffin, taken at one of the funeral train stops, where his body was out for public viewing, a pause on the way back to Illinois.
I recall seeing a photo of the coffin about to be covered with concrete though. ;')