I was also searching for Robert Henry and came across this link. Not sure if you will get this because it was posted in 2008!! He is my great uncle and I was looking for pictures of the original ROSE BOWL sign he designed. Not much luck on if it is the same sign being used today....or any info or pics of the floats he designed.
Sadly he did pass away in the 90s. We are still in contact with his first wife Eleanor, who lives in Laguna and his sister Lucile who lives Oregon. His brother Harvey was my grandpa. Anyways just thought I would reply to this. I love hearing the history and story of my family!
-Joanna Morse (my mom is a Henry)