Historical prices can be retrieved using Interday_timeseries operation in TRKD API. This operation allows you to retrieve price data (Open, High, Low, Close, Volume, BID, ASK fields only) at a frequency of Daily, Weekly, Monthly, Quarterly and Annual period intervals. History can go back up to last 20-30 years depending upon since when we started collecting the data.
Thanks and Regards,
Online Solutions Team.