The Royal Society has announced that it is providing free access to all its journals 70 years or older. This is of special interest to all historians conducting research on meteorites, since all of the material in the Philosophical Transactions of the Royal Society, first published in 1665, is available. Refer to the press release at http://royalsociety.org/news/Royal-Society-journal-archive-made-permanently-free-to-access/ for more information and for a link to begin a search of the journals.
Another source of historical information available from the Royal Society is its history of science journal, Notes & Records of the Royal Society. Content is normally restricted for one year, but after that period, the articles are freely accessible.
I was fortunate enough to have an article dealing with the Mooresfort meteorite published in December 2010. Since it was the 7th most-downloaded article for the year, it is freely accessible even though a year has not passed.
If you have not obtained a free copy, go to http://rsnr.royalsocietypublishing.org/site/misc/top_ten.xhtml and scroll down to the link which reads "William Higgins at the Dublin Society, 1810–20: the loss of a professorship and a claim to the atomic theory", by Mark I. Grossman. Click on the link and you can download a pdf copy without charge.
Another article of mine entitled "Smithson Tennant: meteorites and the final trip to France" can be downloaded for free at http://rsnr.royalsocietypublishing.org/content/61/3/265.full.pdf+html?sid=6aa58f86-22ea-4aef-a597-1aa6f9da545e.