List of English Prepositions

If you are interested in a more in-depth grammartical analysis of the English preposition, please refer to my essay at:

http://www.rockpicklepublishing.com/essays/formandfunctionofprepositions.html

I compiled this list from lists out of English language grammar books as well as native speaker intuition and extensive grammar study. All of them are prepositions and perform prototypical prepositional functions. Unfortunately, the lists of prepositions taught to children are lacking and only contain a small handful of all the possible prepositions in English.

I am curious. Which ones do you not consider to be prepositions and why?

I was wondering where you compiled this list from? It contains many words I would not consider prepositions.