Then I'd have to buy them again!
Looking at Discogs, the Interdisc European issue of 'Free Form' that sidewinder has has never been sold. Jazzland was a US company so I'm assuming they licensed it for European release.
As for 'Abstract', the UK Columbia Lansdowne Series seems to have been more available. So did Columbia spot the potential in the reaction to 'Free Form' to jump onto 'Abstract' for the Lansdowne Series.