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These lectures are from Particle Physics, General Relativity, and Mathematical Methods in Physics courses taught to undergraduate and graduate students at the Colorado School of Mines. You can access the course websites at inside.mines.edu/~aflourno/Particle/423.shtml, inside.mines.edu/~aflourno/GR/418.shtml, and inside.mines.edu/~aflourno/MathPhys/511.shtml. These include the lecture notes and additional material. During a semester when I am teaching a course, the website is unfurled, but afterwards you can see homeworks and their solutions as well as quizzes and exams and their solutions. My background is in string theory and I teach both particle physics and general relativity with an emphasis on their similarities and the importance of symmetry in each. As for Mathematical Methods in Physics, well... I was asked to teach that one.