Here is Hans Hoppe's first treatise in English — actually his first book in English — and the one that put him on the map as a social thinker and economist to watch. He argued that there are only two possible archetypes in economic affairs: socialism and capitalism. All systems are combinations of those two types. The capitalist model he defines as pure protection of private property, free association, and exchange - no exceptions. All deviations from that ideal are species of socialism, with public ownership and interference with trade.
The United States utilized economic planning during the First World War. The Federal Government supplemented the price system with centralized resource allocation and created a number of new agencies to direct important economic sectors; notably the Food Administration, Fuel Administration, Railroad Administration and War Industries Board.  During the Second World War, the economy experienced staggering growth under a similar system of planning. In the postwar period, US governments utilized such measures as the Economic Stabilization Program to directly intervene in the economy to control prices, wages, etc. in different economic sectors.