A new version is available here

III/92 A Library of Stellar Spectra (Jacoby+ 1984)

Jacoby G.H., Hunter D.A. Christian C.A.
<Astrophys. J. Suppl. Ser. 56, 257 (1984)>
[VizieR query form] · [ftp] · [http] · (161 spectra, 5.1Mb)

(Click on the catalogue name to find more details on its Contents)