OpenSSL 0.9.8za was posted at OpenSSL.org site on Jun 5, 2014.
Although there is a version in 1.0.x, the post dates for them are the same.
For some open source project, they may require 0.9.x version of OpenSSL.
So, I share 0.9.8za built for x64/Windows here.
It was built using Visual Studio 2010 for x64 architecture and contains DLL and static version of libraries.