SCHEDULE 13D TGC INDUSTRIES, INC COMMON 872417118 EDWARD L. FLYNN 75-11 MYRTLE AVENUE GLENDALE NY 11385 718 386 5800 5/13/98 cusip no. 872417118 1 EDWARD L. FLYNN ###-##-#### 2 3 4 BROKERAGE ACCOUNT PF 5 6 USA 7 480600 8 9 SAME AS 7 10 11 SAME AS 7 12 13 7.428% 14 IN