What territories were administered as if they were Chief Commissioners' Provinces under the name of Himachal Pradesh and Bilaspur?
The territories that were administered as if they were Chief Commissioners' Provinces under the names of Himachal Pradesh and Bilaspur are not explicitly listed in the provided context. However, it does mention that "the territories specified in sub-section (1) of section 5 of the Punjab Reorganisation Act, 1966" were administered as such.