As already suggest I'd go to AmiNet and their
=misc/fish&content=lha&sort=desc]Fred Fish Disk archive. When looking for specific (especially older) versions of libs or such it's a good source. Checking the
index they covered LhA v1.0 on disk 577, v1.11 on disk 593, 1.22 on disk 637 and 1.32 on disk 715.
You're sure it's not archived using LHArc format (lha -0)?
