https://vault.si.com/vault/1970/04/06/merger-madness-and-maravichApparently there was talk of the Celtics moving to Long Island.
"13) Make money, not war. NBA teams are supposed to be so many Rocks of Gibraltar compared to the ABA franchises, but war is no respecter of tradition. Last week, while it was apparent that 11-time world-champion Boston had lost money over the regular season—and would miss out on its usual quarter of a million in playoff receipts—there was talk that the franchise would be moved to Long Island."