Explanation:

 Himachal Pradesh was formed on 15th april 1948 with the merger of twenty six Shimla hill states and four Punjab hill states into a centrally administered Chief Commissioners Province. Its Headquarter was located in building of the British Indian foreign office at Shimla which was destroyed by fire on 9th may 1957. Headed by first chief commissioner N .C Mehta (1948). Deputy Chief Commissioner was Penderal Moon (Became second Chief Commissioner in 1950). Bhagwan Sahai (1951) was 3rd Chief Commissioner.