[MarkBsnr]

Does that make sense in the first half of the 1st Century?

Most of the Christians were illiterate and poor and could not support literate people to copy out many copies of letters by hand. Obviously some survived, but how many did not? Remember; no emails, no mass storage or production. The example of Lydia is an exception, rather than a rule. Plus, she was from Thyatira; I don’t recall an epistle sent there, so she may or may not have had access to any of any of the Apostles’ letters.

[MHGinTN]

"Most of the Christians were illiterate and poor and could not support literate people to copy out many copies of letters by hand." You might want to check that also, since literacy was higher than you apperntly give credit. Literacy was especially connected to commerce and to Jewish culture. The earliest converts to Christ were Jews, and Paul made it a point to visit the Synagogue wherever he went. Do a word origin on 'synagogue' and you might be surprised what you discover about those' illiterate' early Christians converted from Judaism.