Dataset:  cotton.dat

Source: P.A. David (1970), "Learning by Doing and Tariff Protection: A
Reconsideration of the Ante-Bellum United States Cotton Textile Industry",
The Journal of Economic History, Vol. 30, #3, pp. 521-601.

Description: Production (per man-day) of Cotton, with input factors:
Spindles in operation, Man-days worked, and Cumulated Output and
Experience. Annual data: 1834-1860 for a combined sample of 6 mills.

Possible Production Functions: ln(Y/L) = a0+a1*ln(S)+a2*ln(L)+a3*ln(Q)
                               ln(Y/L) = b0+b1*ln(S)+b2*ln(L)+b3*ln(T)

Variables/Columns

Yards/Man-day  (Y/L)    1-5
Average spindles in operation  (S, in 1000s)  9-13
Man-days worked (L, in 1000s)        17-22
Cumulated output of cloth   (Q, in 1Ms of yards)   26-33
Cumulated firm-years of recorded production Time  (T)  37-39