Short answers, pulled from the story.
Thomas Stoltz Harvey was an American pathologist who contracted tuberculosis during his third year of medical school. The disease forced him into bed for an entire year within a sanatorium facility while he built the foundation for his future career in pathology.
Princeton Hospital hosted the autopsy on the 18th of April 1955 at 8:00 am. Dr. Harvey sectioned the preserved organ into 170 pieces inside a laboratory at the University of Pennsylvania over three full months.
Marian Diamond discovered that certain parts of Einstein's brain contained a higher proportion of glial cells than the average male brain. Her study published in Experimental Neurology in 1985 noted that Einstein's brain had more glial cells relative to neurons in all areas studied except the left inferior parietal area.
His heirs transferred all holdings constituting the remains of Albert Einstein's brain to the National Museum of Health and Medicine in 2010. This transfer included 14 photographs of the whole brain prior to sectioning which were never before revealed to the public.
This period spanned forty-three years before the public exposure of the specimen. The story appeared in an episode of the Science Channel show Dark Matters: Twisted But True which premiered on the 7th of September 2011.