1970 Is it the moment?

Below is a page from the 1970 yearbook for Bayport Blue Point (Stepping Stone). But is this the first mention of Phantoms in the yearbook? WHY did they change the name? WHEN did it happen? Was it a big decision? WHO made it?!? Check out the collection of yearbooks online: https://nyheritage.contentdm.oclc.org/digital/search/collection/p16373coll58/searchterm/Bayport%20Yearbooks/field/relatig/mode/exact/conn/and/order/date/ad/asc