Where can i find older versions

Because I have modified (some) PHP in gallery to accomodate user requirements I was hoping to follow the suggestions in the documentation and do the following:
1. download version 1.4.2
2. diff existing files with downloaded copy
3. note differences
4. replace 1.42 files with 1.5 files.
5 make changes as noted in step 3.

BUT... I can't find version 1.4.2 on Source Forge.

Where can I find the older download packages (zip preferred)

I also need 1.4.4-pl2

Thanks for your help.
Greg