Meshes disappeared???

Working on a project, I save 3 times, every like 15minutes and before I close down. Some of the meshes are completely gone, but the new stuff that I worked on is still there. Nobody else works with me so it couldn’t have been that, does this ever happen to you? Using version 2.49

Did you check your outline? Also hit Alt + H to see if it was hidden?

Pressed Alt H, no hidden stuff, outline doesn’t show it. So weird, I could understand if for reason Blender didn’t save the most recent progress, but just random pieces new and old are gone.