[Non-Sequitur]

Certainly. Your best and primary source is the data listed in the ‘Statistical History of the United States’. I can give that to you if you need it.

Is it available online?

[PeaRidge]

Yes, if you are a member of JSTOR.

[Bubba Ho-Tep]

Is it available online?

Bicentennial Edition: Historical Statistics of the United States, Colonial Times to 1970

Also useful:DeBow's Review: Dept. Of Commerce