Where to find Reactive Extensions 2.2.5

The latest and greatest Reactive Extensions v3 has been released.
With it came a name change to the NuGet packages:

• Rx-Main is now System.Reactive
• Rx-Core is now System.Reactive.Core
• Rx-Interfaces is now System.Reactive.Interfaces
• Rx-Linq is now System.Reactive.Linq
• Rx-PlatformServices is now System.Reactive.PlatformServices
• Rx-Testing is now Microsoft.Reactive.Testing

And the old packages have been unlisted.

If you have a need to install the older packages, as I have, then all you need to do is specify the version command line parameter when using Install-Package, which seems to be your only option.

Install-Package Rx-Main -Version 2.2.5