Hi Lyn,
Found title of a book called 'Red Cloud Speaks - Trance Teachings through Estelle Roberts' (if you're interested). Have a look at the info about Red Cloud I sent and see how you feel while you're reading it. Just because Red Cloud channelled messages through Estelle Roberts, doesn't mean he can't or doesn't work through others too.
I've no doubt my spirit helper Frances Banks has worked with others, not just me. You may well have another NI guide called Red Cloud, not the Lakota Chief Red Cloud around you, but never dismiss the possibility because Red Cloud is well known. Any spirit guide can choose to help anyone, they look for like-minded people who will benefit from, and help others to also benefit from, their teachings. In the eyes of Spirit we are all equal, so Estelle Roberts won't be looked upon as more special to Spirit because she can do trance, than you because you can't. Your intent to do good is all that matters to them.