Best Peshitta evidence?

[Andrej]

Thanks for all your answers, this was really helpful.

i have one more question: What exactly is the earliest actual referene to the Peshitta in any literature? i have seen the "78AD" one, but it does not seem clear it is in reference to a Peshitta manuscripts. What about the St. Thomas Chrstians as a whole, what do the different groups believe concerning the origins of the Peshitta?

Are there any history books that talk about how it was actully delivered by the Apostle Thomas? If not, where do the stories come from?

Thanks in advance