ADG had taken this course in Spring 2016. The LaTeXed notes for the first 23 lectures when he had taken the course can be found here : High Energy Physics - ADG. The handwritten lecture notes for the rest of the course can be found here : High Energy Physics - ADG (Handwritten). I also got to know that he had been referring to the books

I have to thank Anindya Sengupta and Sohitri who took all the trouble to search for the notes and send the same to me. Special thanks to Anindya da for LaTeXing the notes and making them available to us. But I really envy them for having had an opportunity to learn both the Introductory Quantum Field Theory course as well as the High Energy Physics course from the legendary ADG! They even had ADG for Advanced Mathematical Methods :(