is the one surrounding his death and burials...

In short, his coffin was relocated 17 times and opened 5 times after his death. He didn't reach his final resting place until 1901.

"On September 26, 1901, Lincoln's body was exhumed so that it could be re-interred in the newly built crypt. However, those present (a total of 23 people) feared that his body might have been stolen in the intervening years, so they decided to open the coffin and check.

It was said that a harsh choking smell arose when the casket was opened. Lincoln was perfectly recognizable, even more than thirty years after his death. His face was a gold color from unhealed bruises, a result of contrecoup (injury on the opposite side of the head from point of impact) caused by the gunshot wound, which shattered the bones in his face and damaged the tissue. His hair, beard and mole were all perfectly preserved although his eyebrows were gone. His suit was covered with a yellow mold and his gloves had rotted on his hands. On his chest, they could see some bits of red fabric — remnants of the American flag with which he was buried, which had by then disintegrated. It was theorized that Lincoln had been embalmed so many times on board his funeral train that he had been practically mummified."