It's definately possible and you should definitely try it.

you'll never know for certain as long as you're taking somebody else's word for it; so you should definitely do the work yourself and claim the experiences for your own.

Every historical event I've ever viewed was considerably different than it is portrayed by modern historians. Big details, subtle details, the people involved; the individual nature of experience (rather than group-think and group-experience), etc. the difference between the real events and the historical narrative is like the difference between a boot and a picture of a boot. ya dig?

if you're concerned about being deceived or confused, it means that you need to figure out how to discern all of the subtle nuances of consciousness and the sooner you start, the better. there are sooooo many things you can do to pwn facts in the astral and dreamstate. you only have to make the effort, do the work and figure out what they are.