Individuals who make extremely massive donations to a specific chapter may have the owner(s) of that chapter submit the donation for Dragon Stamps. Submitting someone for a chapter donation to receive Dragon Stamps doesn't guarantee receiving them in any way but the request goes through the higher ups and, if they feel the donation warranted more than the Goblin Stamps an individual campaign can give, they may reward the player with some Dragon Stamps as well.
Ashbury wouldn't have awarded the Dragon Stamps- they would have sent the donors name and what he donated to the Alliance Chairman and had a discussion with her about why they feel this donation went above and beyond what they could compensate. Then they would have had to wait for a decision/Dragon Stamp compensation total but in all likelihood if a chapter feels this is the appropriate route to go its unlikely, I would think, their request would be denied.