  Einstein gravities in general dimensions coupled to a cosmological constant
and extended with quadratic curvature invariants admit a variety of black holes
that may asymptote to Minkowski, anti-de Sitter or Lifshitz spacetimes. We
adopt the Wald formalism to derive an explicit formula for calculating the
thermodynamical first law for the static black holes with
spherical/toric/hyperbolic isometries in these theories. This allows us to
derive/rederive the first laws for a wide range of black holes in literature.
Furthermore, we construct many new exact solutions and obtain their first laws.
