SCHEDULE 13D TGC INDUSTRIES, INC PREFERRED C 872417209 EDWARD L. FLYNN 75-11 MYRTLE AVENUE GLENDALE NY 11385 718 386 5800 11/25/97 cusip no. 872417209 1 EDWARD L, FLYNN ###-##-#### 2 3 4 BROKERAGE ACCOUNT PF 5 6 USA 7 73881 8 9 SAME AS 7 10 11 SAME AS 7 12 13 6.43% 14 IN