900-1200 angstrom interstellar extinction in the Galaxy, large Magellanic Cloud, and small Magellanic Cloud

We have derived far-ultraviolet extinction curves for stars in the Galaxy, LMC, and SMC from spectra of pairs of stars observed with the Far Ultraviol et Spectroscopic Explorer (FUSE) satellite, matched in spectral type and wi th different amounts of reddening. The stars were observed for other FUSE p rograms and were not selected for large reddening. Thus, uncertainties in t he derived extinction curves depend on the photometric data. In the case of strongly reddened stars from the Galaxy, the strong H-2 absorption at the shortest wavelengths is an additional complication. These initial results i ndicate that there is a family of extinction curves that rise strongly to t he Lyman limit and extend the related extinction curves from longer wavelen gths.