In 1963, Libby and Fox studied nonsimilar perturbations from Blasius solution [J. Fluid Mech, 327, pp. 101-115, 1996] and obtained the discrete eigenvalues and eigenfunctions of the momentum perturbation equation. Only a handful of eigenvalues were quoted, however, and in subsequent work other authors have given more accurate values (but, unfortunately, no more than 20). The most recent, most accurate values I have been able to track down are in Luchini's 1996 paper [J. Fluid Mech, 17, pp. 433-449, 1963], where only the first 10 eigenvalues are quoted. Is anyone aware of any published work or database with more eigenvalues or describing a systematic procedure to obtain them?