The links on the musuem website are broken, so you can't see the scans of the letter. It appears to be a typo -- they wrote http://www2.museumtour.com/spc_lawsuit/page1.gif instead of http://www2.museumtour.com/sbc_lawsuit/page1.gif. To see the images, just change that p to a b:
http://www2.museumtour.com/sbc_lawsuit/page1.gif
http://www2.museumtour.com/sbc_lawsuit/page2.gif
http://www2.museumtour.com/sbc_lawsuit/page3.gif
http://www2.museumtour.com/sbc_lawsuit/page4.gif

To summarize the text: "That's a very nice website, see? It would be a shame if anything were to happen to it. Wouldn't want to see any more links get *broken*, would we?"