Postmortem Photo of Frederick William IV of Prussia Lying in His Casket (1861)

 

Postmortem photo of the deceased Frederick William IV of Prussia lying in his casket, 1861. This version of the photo was published as a non-stereoscopic stereoview.

Source: Rijksmuseum.

Two Hand-Colored Tintype Postmortem Portraits of the Mother and Father of Union Soldier John Peter Bailey Posing His Body (1865)

Reuben Bailey with his son John Peter Bailey.

Rebecca Bailey with her son John Peter Bailey.

Two hand-colored tintype postmortem portraits of the mother and father of Union soldier John Peter Bailey from Company F of the 6th Ohio Cavalry posing his body on March 31, 1865. He died at home in Newton Falls, Ohio, from the effects of disease and starvation as a result of his time at the Confederate prison camp in Salisbury, North Carolina. Images from the American Experience documentary called Death and the Civil War.

Many thanks to the West Family blog for all of the additional information.
Find A Grave entry for John Peter Bailey.