The link above contains scans of the actual booking calendar that Fritz Von Erich used in 1977. World Class Memories explains the meaning of some of the notes.
Entered for each date are the city ("CC", on Thursdays, stands for Corpus Christi) and matches for that evening's card (or, for spot shows, the wrestlers scheduled to appear) and the gate for each show.For wrestling fans, especially those interested in the history of the industry, this is a unique look behind the curtain. I cannot recommend checking out the World Class Memories link enough. Thanks again to the Wrestling Classics gang for finding and sharing this awesome information.