Are my vintage photographs of Marilyn Monroe originals?

Hello. I’ve been searching for many years for any information about these rare photographs of Marilyn Monroe that I found at a local thrift store in Reno Nevada. The one that has the fence was featured in Life magazine or Time magazine, but unfortunately the only info about it was that it was from the Zeno collection. If anyone has an idea about the provenance or authenticity, I would love to hear more about it.