Physical Evidence

Preservation of physical evidence from an accident or injury scene is just as important as photographs. Physical evidence includes such things such as a piece of rotten wood that fell from a staircase, a branch that blocked visibility, the shoes you were wearing when you slipped, the indentation by the hydraulic shock absorbers of your bumper that showed the amount of impact was sufficient to injure you (especially important when the insurance adjuster claims that yours was a low impact accident).
In addition to gathering and photographing the physical evidence, as appropriate, write notes so you don't have to depend upon your memory later on. What does the accident scene look like? Who was present? How did it happen? What were you doing just prior to the accident? What did you do immediately afterward?
For more on documentation, continue to Document Everything! Go to DOCUMENT EVERYTHING!