The IRS has an Exempt Organizations Tax Code, Regulations, and Official Guidance, and more links at its Tax Information for Charities & Other Non-Profits site. But a search for the words: canvas, or strategies, or "all the words" Applied Nonviolent Action (or applied non violent action), in their Search for Charities, Online Version of Publication 78, gets zero hits.
Google gets 10s of thousands of hits for the full name in quotes, and you might try focussing it to edu sites: "applied non violent action" strategies site:edu (7 hits), "applied nonviolent action" strategies site:edu (26 unique of "about 46"), "applied nonviolent action" strategies site:eu (12 of "about 68"), etc. You might also try search.usa.gov (states as well as federal reports and sites), which gets 5 for "Applied Nonviolent Action" strategies and 1 for: 5 for "Applied Non violent Action" strategies. I get only 2 hits in LexisNexis Academic for "Major world publications" all avail dates, all text, for: applied non violent Action and strategies. If you are near a large public or academic library, it would be wise to search their "National Newspapers", or "Proquest Newspapers", or individual large ones such as the New York Times, Washington Post, etc. The above Google or search.usa.gov searches may lead you to names of people - or other related agencies or organizations - to try in more searches.