That long hallway you mentioned in the studios of CBS Grand Central brought back many memories for me. At the end of that hallway was a washbasin and also the maintenance shop.
Memories of Ed Murrow sitting in a chair having makeup applied before his show in Studio 41. CBS electrician, Pete Epolito and I would talk to Ed while he was being made up. Do you remember the mannerisms of Don Hewitt in Studio 41?
The days of early television are gone but our memories are still with us. Hoping we hear from more retirees in the future.