Neville Temperley, Elliott H. Lieb: Relations between the ‘percolation’ and ‘colouring’ problem and other graph-theoretical problems associated with regular planar lattices: some exact results for the ‘percolation’ problem, Proceedings of the Royal Society A, 322 (1971) 1549 [doi:10.1098/rspa.1971.0067, pdf]
Early history:
Stephen Doty, Anthony Giaquinto: Origins of the Temperley-Lieb algebra: early history [arXiv:2307.11929v2]