Where can previous Last Sale prices for company stocks be found?

You might want to check out www.weseed.com. It’s a virtual stock market site. You manage an imaginary portfolio on there.

You could not have looked very hard as there are sites all over the place. Yahoo Finance is one of the easiest to use. Go to the “get quotes” box in the upper left corner of the screen. That will get you started. Select “chart” and the period of interest. You’ll find high and lows, opening, closing, volume, in chart form. There is also section for “Historical prices” where you can get the numbers in tabular form.