Seguin #6003C, 6031B, & 6032B The year was changed from 1977 to 1974 for all the lines that trended NW-SE reflecting the actual year flown. The 1974 survey was flown NW-SE. Projects 6031B and 6032B filled in around 6003C. The contractor merged the data from both years. The publication, GJBX-037(79) might have some details about the merge. We were unable to view this publication. The Julian days given for the 1974 survey are probably incorrect as the dates of 5/11/74-6/11/74 are given in the documentation for the 1974 flying. The line numbers were redone in the rad file in order to be compatible with the mag file.