Is there a list somewhere here of the seminal papers in quantum gravity? I recently ran across a paper/chapter by Ashtekar: Non-perturbative Quantum Gravity: What and Why? from a 1991 book Lectures on non-perturbative canonical gravity by Abhay Ashtekar, Ranjeet S. Tate when googling to find out what a preferred foliation was. It was very interesting and made me think. It also made me realize that there were probably some interesting seminal papers on quantum gravity from the early days which people assume you have read. Does anyone here have a relatively short list (say less than 20) of the must-read papers in quantum gravity? This seems like the kind of list a true aficionado or practitioner might keep. Especially any that might be relatively accessible to a non-professional that is still learning?