the bitcoin core team doesn't publish compiled versions on github. what you see under releases is the zip of the source code at the last commit that that particular version was released at. and OP isn't looking for source codes.
besides the /bitcoin github repo only has newer bitcoin core (which i think was called something else initially, bitcoin-qt?). to get very old versions like 0.1 you need to go to sourceforge
https://sourceforge.net/p/bitcoin/code/1/tree//trunk/ although i don't think it has compiled versions.
i believe someone has erased all the old "compiled" versions (anything <0.3) from the internet even though the code is still there.