“The wives of scores of Litvishe roshei yesiva didn’t cover their hair, including Rebbetzin Tonya Soloveitchik, a”h.”
Rebdoniel, Rebbtzen Tonya Soloveitchik did cover her hair. This is one of those untruths that has been circulating for many, many years. What you are referring to is the fact that she did not cover her hair in the house, which was a common practice among the Yekkes, but absolutely did when she left the house.