Changes

Trying for older data is problematic from Yahoo. The site complains about start dates being ahead of end dates with start dates before 1976ish... Usually, the issue doesn't happen with 2digit date less than 41. But you You can edit the URL directly using [https://www.unixtimestamp.com/index.php Unix Timestamps].*to create 1900 to 28th July 2020: https://finance.yahoo.com/quote/%5EDJI/history?period1=-2208988800&period2=1595980800&interval=1d&filter=history&frequency=1d. However, the data you get will still start on 1/29/1985.