The material Cu(1,3-benzenedicarboxylate) (C8H4CuO4) features structurally perfect kagome lattice planes of spin-1/2 copper2+ ions, with the separated by organic linkers. High temperature susceptibility measurements of this material display a Curie-Weiss temperature of roughly -30 K, suggesting antiferromagnetic exchange between nearest-neighbor copper moments. The spin-1/2 kagome lattice Heisenberg antiferromagnet has long been a system of great interest in condensed matter physics as it is an ideal lattice to display a disordered spin liquid ground state. Cu(1,3-bdc) is the first material which features a kagome lattice antiferromagnet in a crystal structure that features organic constituents. This material is thus a unique tool to study the physics of frustration in an metal-organic crystal framework.