Both of these esoteric teachings were given out in the early 20th Century, reportedly as a planned series of expanded teachings based on the original theosophical teachings
In every area of theosophical endeavour, there is always a “higher component”, for example:-
If you visit the Natural History Museum in London, you will find a Time Rail, which runs from the birth of the earth to the present - each step you take represents 25 million years. There are geological samples from each epoch, and then, as life begins, there are fossil remains of the plants and animals which have emerged and evolved through the millennia.
Belief is a form of gambling !
Some people think they have a certainty, and they are sure that their teacher or sacred book is THE ONE, and so they stake everything on that being correct - that they will go to heaven because of their correct beliefs. Others are equally certain only about one of the other teachers or books.
The TS has Brotherhood as its founding principle, but it struggles with it – it always seems easier to read a book than to work on oneself.
We are here in a school - this seems the best description of what humanity is doing here on earth - it may not be “absolute truth”, but it is a very useful idea.
Obviously, a lot of other questions immediately arise from this statement:-
How is the school organised ?
Though I generalise that theosophy is theoretical and speculative, there is also some very good stuff, which I have found very useful .......
The original Hindu schools of yoga were as follows
The Mahatma Letters are a book, full title “The Mahatma Letters to AP Sinnett”, edited by A. Trevor Barker – the first edition was published in 1926. Amazon Link
This is a strangely fraught topic …….. It seems some people do guided meditations where they meet an old man in a white robe, who gives them good advice, and before you know it, they are channelling Masters ZP and IT.