The Rebbe's Letter to Rabbi Eliyohu Jung Concerning the Manhattan Eruv, Chol Hamoed Pesach 5724
Rabbi Eliyohu Jung was a central rabbinic figure in the Manhattan eruv discussion. The Rebbe's letter addresses the active rabbinic record and the effect of associating names with the project.
A letter during the active Manhattan dispute
Rabbi Jung was closely involved in the Upper West Side and Manhattan eruv discussion. The Rebbe wrote to him on March 30, 1964, while public rulings, private correspondence, and competing accounts of rabbinic support were circulating.
The letter addresses the way the project was being presented and the consequences of attaching rabbinic names to a public permission.
Names create public reliance
Most people cannot decide a large-city eruv from the underlying sugyos. They rely on the names of Rabbonim whom they trust.
If a name is used more broadly than the Rav's actual words, respect for a colleague or willingness to discuss a proposal can be mistaken for a heter to carry.
Rav Moshe made the same distinction
In the same period, Rav Moshe wrote to Rabbi Norman Lamm that he respected qualified Rabbonim who disagreed with him but could not permit or assist the eruv. He objected to the use of his name as support.
The two correspondences show why precise attribution mattered: an impression of rabbinic agreement could change public Shabbos practice even when no such agreement existed.