Many years ago this Angostura point was once the pride of the Anderson
collection when the term "Yuma" was being used to describe
different examples of early western point types. This term originated from
Dr. E.B. Renaud of Denver University and is no longer used. Original names
such as Oblique Yuma, Collateral Yuma or Yuma-Folsom have been replaced with
specific names such as Angostura, Eden, Folsom, etc.
The point on the right in his picture is the original Angostura point. The other three points to the left are casts.
This picture shows a triple exposure of the original Angostura point known as the "Anderson Yuma".