Merge pull request #282 from SGA-Brookshire/master

cleaning up files
Linked pages 75 and 77, then linked them to 74. Fixed some errors.
Merge branch 'master' of https://github.com/umd-mith/sga
Have to work on an alternate reading encoding later, not sure how to code now.
Proofreading, mainly fixing errors and inconsistencies
Merge pull request #283 from alevan2/master

Linked pages 75 and 77, then linked them to 74. Fixed some errors.
cleaning up