Are there any free/cheap sources for historical data on company earnings and valuations? I can get historical price data from Google and Yahoo, and it looks like I can get about five years of historical balance sheet data from Google using quantmod in R. Are there any longer-term sources of for these kind of data?
Bonus points for R packages or code examples.
Answer
If you don't mind parsing some html, AdvFN has fundamental data on US companies as far back as 1994.
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