The GAL (Guild of American luthiers) plan for the 1937 Hauser (ex-Segovia) has the thickness diagrams of both top and back.
The GAL plan for the 1943 Hauser doesn't have a map but there is a brief description. A general way of looking at the plans is that there is a thick area from the sound hole to the area of the bridge then around this thicker area out to the edges it gets thinner. Compared to some other "philosophies" the top is thicker but the fans are lower. There is often an article to go with the GAL plans which gives more details.
Hope that helps.