1773-1799 - John Gardner, previously journeyman with James Watt, actively trading independently and with various partners in Glasgow

1799-1818 - John Gardner and his son John, partnered as J. and J. Gardner

1837-1838 - Gardner & Co established? Located at 44 Glassford Street

1839-1860 - located at 21 Buchanan Street, Glasgow

1860-1883 - located at 53 Buchanan Street, Glasgow

1883 - located at 53 St Vincent Street, Glasgow