The Telugu Academy has been digitizing its catalog. Visit teluguacademy.in (or the official government education portal).

Don't just read the PDF on a phone. Use a tablet or laptop with a stylus, or a PDF reader like or Foxit , to highlight dates, names, and places.

If you need a specific book PDF for academic purposes, I recommend:

These books cover the core curriculum for B.A. History across different semesters: Bharatadesa Swathantra Charitra (Part-3)