A full-disk, line-integrated solar Lyman-&agr; dataset is presented that spans two solar cycles. The dataset is created partially from AE-E and SME data that is scaled to the Pioneer Venus Orbiter Ultraviolet Spectrometer (PVOUVS) upwind Lyman-&agr; sky background data which is converted to a solar surrogate. PVOUVS measurements overlap AE-E, SME, and UARS observing periods and are calibrated to UARS/SOLSTICE irradiance units at 1 AU. The scaled AE-E/SME, the SOLSTICE, and the PVOUVS surrogate data in the interim between the satellites collectively form a composite dataset with a quiet sun value of 3.0¿0.1¿1011 photons cm-2 s-1 common for three solar minima and a solar maximum value of 6.75¿0.25¿1011 photons cm-2 s-1 common to cycles 21 and 22.¿ 1997 American Geophysical Union