I don't know about a,"BOE," letter,but I was there in 1973..read the Watchtower in 1968 and was frazzled when nothing took place after 1976.So when 1975 came and went some of the brothers told me to check it out.They already knew I was a researcher in the field of theology so I went for broke.
I questioned everyone who could have answers for me.The Elders(commettee) talked to me twice on the issue.My magic trick was...I was never baptized...but my ex-wife was.
Since they couldn't answer me I began questioning on 1874,then 1914,1919,1925,1940,and about the big issue in the 70s was.....Christ the Mediator for the 144,000 only.{Prince of Peace,"book}Plus I knew families and I personally knew about a half dozen very old ones who were of the Anointed.
Also at the time I tried to contact Ray Franz and to my surprise,he was disfellowshipped.The Anointed..being disfellowshipped?Oh my!
Now days I'm,also,on ICQ.com and got a Witness to denie all of this......She said I was lying....lol,except for Franz............
Frank