Can I donate?
It’s not something being openly considered.
What would donations be used for?
Hosting costs, primarily. We also have costs associated to domain registration, our CDN, search capabilities on this site, and more. For future content, we would use it for microfilm research, a newspapers.com subscription, or similar research costs.
If you’re not soliciting donations, why do you describe what you would use them for?
Donations are not openly solicited, however, heavy users of the site may see donation messages pop up and can receive special benefits depending upon the donation commitment. The benefits change over time, though one example could be a sponsored page, special advertising, having no advertising when browsing, etc.