Perhaps a more attainable goal would be for Wikipedians to gain access to books NOT UNDER COPYRIGHT that Google has scanned and restricted. Pretty much everything 1922 and earlier they have been good about making public (1908 and earlier for the UK) but there are a vast number of titles which are copyright clear for this reason or that for the 1923 to 1973 period that they have hidden behind "snippet view." There is absolutely no plausible copyright reason for them acting thus and that case might be made much more easily than a dubious appeal to release files of copyrighted materials because Wikipedians are on the side of the angels.