Donating Faction to Guild

Is there a way to track this? I mean, somewhere the Guild Leader or Officers could find a list of who has contributed and how much?

We have a list of guild members, who was invited by whom, who was kicked, etc. So I would think that tracking which member gave Faction would be simple. Is there a place to find this?

Why do I want this? So I know who to thank.

There is no mechanism to track this. In our alliance, when we donate faction, we announce it to the alliance. But this is hardly a method for keeping track of how much each person contributes. It's more for alliance morale and you quickly remember those that give most often.