We completely redid the pledge manual in 1999. I recieved mine the last semester that it was used. Since IHQ has made the switch completely over to LEAD and is strongly encouraging chapters to do the same the old book has gone out of print. The new one they send us free. The name says it all, Leadership, Ethics, Achievement and Development or LEAD -- that's what it's all about. It's *really* a great program.
Phase I is what I would guess you'd refer to as the Candidate (pledge manual). We also have Phases II, III and IV for each of your 4 years in school.
My personal favorite is II (I'm teaching it next semester and have in the past). It includes things like the 7 habits of highly effective people, Conflict with Civility and other *excellent* topics to help members deal better with themselves and with others.
I've actually heard of schools or maybe just one school.. who knows how many.. giving certain chapter's members 1 hour of credit for completing Phase I!
Edited to add this URL:
Click here to learn more about Sigma Nu's LEAD Program...