by Robert E. Gallman (Author), Paul W. Rhode (Author), Claudia Goldin (Foreword by) Gives permanence and context to Gallman's influential economic research on growth theory. When we think about history, we often think about people, events, ideas, and revolutions, but what about the numbers? What do the data tell us about what was, what is, and how things changed over time? Economist Robert E. Gallman (1926-98) gathered extensive data on US capital stock and created a legacy that has, until now, been difficult for researchers to access and appraise in its entirety. Gallman measured American capital stock from a range of perspectives, viewing it as the accumulation of income saved and invested, and as an input into the production process.