The Rebbe supports uniting New England institutions but says it’s premature. He urges encouraging a supporter to publish a sefer in memory of his father. He advises strengthening Torah and Chassidus for students and growing the yeshiva through more enrollment and Yiras Shamayim, concluding with blessings for success.
https://www.torahrecordings.com/rebbe/004_igros_kodesh/adar_beis/962