I have 2 suggestions for you:
1. Contact the National Lighthouse Museum in Staten Island at (718)390-0040 or look them up at
www.lighthousemuseum.org to get their email address.
2. Contact Tim Harrison in Maine at (207)259-2121 or email him at editor@lighthousedigest.com
I'm sure they will have a source that will either buy them at a reasonable price or you can donate them and claim it on taxes.
I would be interested in what you find out.