The text of the 1979 kol korei against a Flatbush eruv [Fig. a] refers back to the 1962 Manhattan kol korei [Fig. b], claiming that it includes Brooklyn in the Manhattan issur and listing among the signatories Hagaon Harav Eliyahu Henkin zt“l. However, as the original copy of the 1962 Manhattan kol korei demonstrates, the takanah then against erecting eruvin only applied to Manhattan and not to Brooklyn. This correlates with what Hagaon Harav Menashe Klein shlita wrote (Oim Ani Chomah, siman 7) that Hagaon Harav Moshe Feinstein zt”l told him in 1979 - in the presence of Rav Elimelech Bluth shlita, Rav Shalom Dresner shlita, and Rav Mordechai Tendler shlita - that contrary to what someone in the Agudas HaRabbonim was promoting, the 1962 issur from the Agudas HaRabbonim was only regarding Manhattan.
Additionally, it shows only five signatures. Nowhere is Rav Eliyahu Henkin’s signature to be found. For more proof that Rav Eliyahu Henkin never signed the 1962 kol korei, see the copy of the 1962 kol korei that the Agudas HaRabbonim advertised in the HaPardes in 1966 (40th year, vol. 8) [Fig. c]. Note that even at this later date there was still no signature from Rav Eliyahu Henkin to be found. Even more so, from Rav Henkin’s letters (Kisvei Hagriah Henkin, p. 33) and from the 1960 kol korei on behalf of the Manhattan eruv (Divrei Menachem, O.C. vol. 2, p. 10) [Fig. d], we see he was a proponent of the Manhattan [and Brooklyn] eruvin. Additionally, Hagaon Harav Moshe Feinstein zt”l never gave a p’sak l’maaseh against eruvin as the 1979 kol korei falsely claims. On the contrary, he declined to issue a p’sak since the Aruch HaShulchan and other Achronim disagreed with him (Igros Moshe, O.C. 4:87).i