Old ubuntu debs?

Hello. Where could I find old ubuntu deb installation files to install panda3D? On the website there are only the recent versions. Thanks. (ps: already googled my problem).

You mean for older versions of Panda3D? You could manually navigate to the download archive directory and grab the debs from there, e.g:
panda3d.org/download/panda3d-1.5.4

thank you!!