1st and 2nd Quarter 2020 GAS-1200 Claim For Refund - Nonprofit Organizations 1st and 2nd Quarter 2020 GAS-1200 Claim For Refund - Nonprofit Organizations Documents Gas 1200 web 11 18 19 v1 March June Final gas 1200 instructions rev 1 18 web v4 final Gas 1200 web 11 18 19 v1 March June Final