Data for the evaluation of training programs is usually collected directly from former trainees. To explore a less costly, alternative approach, follow-up data was collected from the personnel files of 16 employers of the graduates of four Los Angeles training programs. While limited in some ways, these data did permit a comparison of the training programs and did yield some insight into the firm's influence on the post-training experience. The trainees associated with on-the-job training, for example, seem to have been more successful than the graduates of the three institutional programs with whom they were compared. Much of the former program's superiority can apparently be traced to a greater ability to place trainees at firms where success is more probable. Within the Los Angeles area, success seems to be most probable at large government contractors and least probable at small companies in highly competitive industries. 27 pp.