The Map has a legend that lists out the 5 Divisions of Punjab's Administrative Units.
Province is flanked by two rivers, Indus in the west and Yamuna in the east. The area between Hissar and Bahawalpur is part of the then Bikaner Princely state which falls under the Rajputana province. Areas in yellow represent the Princely states of Faridkot, Patiala, Bahawalpur, Jind etc.
Lyallpur (now Faislabad)
Montgomery (now Sahiwal)
Shahpur (now in Sargodha)
Total area, British Territory 97,209 square miles
Native States of Punjab (Princely States or they were also called Riyasats)
Total area, Native States 36,532 square miles
Total area, Punjab 133,741 square miles