The leading authorities to know, and how the doctrine developed over time. A contract is frustrated where, without default of either party, a supervening event renders performance impossible, illegal, or radically different from what the parties undertook. Frustration discharges the contract automatically and prospectively.
Origin of the doctrine, destruction of the subject matter (a music hall) frustrated the hire contract.
Frustration of common purpose, the cancelled coronation procession case is the textbook authority for purpose-frustration.
Set the high bar, mere hardship or increased cost is not frustration; performance must become radically different.
Confirmed that leases can in principle be frustrated, while making clear how rare a successful claim will be.