From the late 1800s to the 1960s, the railroad industry faced a unique challenge: What was the best way to ship fresh produce across the U.S. to prevent spoilin

Milk was once an important commodity for the railroads. Before refrigeration became mainstream, high-speed delivery was critical. Trains carried butter, milk an

1936-1952 include comparative statistics from 1928; 1953-1960, from 1947.

The second edition of the Impact Evaluation in Practice handbook is a comprehensive and accessible introduction to impact evaluation for policy makers and devel