Download Archive of Old Google Apps (APKs) for G1 (1.6 Donut) Are old APKs for Google Android apps available for download from some official or trusted source?

I just reset my G1, and would like to reinstall some of the (older) Google apps that don't appear to be available in the Market* anymore.

Google did make some older versions of their apps available, but not everything that I'd like to get back.  For example, I was able to update to Google Maps version 5.6.2, though the newest version in Google Play is (I think) 6.9.0, but Google Listen doesn't any longer appear to be available through the Market app on the G1.

Update: Though searching for "listen" or "google listen" within the Market app does not turn up a listing for the target app, nor does viewing a list of applications by publisher "Google Inc.", I was able to get the Google Listen app through the Market, by going to the web browser, and navigating to https://market.android.com/details?id=com.google.android.apps.listen, and then letting the Market app handle the redirected Intent.

I'd still like to know if an official or trusted source is available to download old APKs published by Google.

*It's still called the Market on the G1 running 1.6 Donut.  I'm guessing Google didn't bother to make the new Google Play store compatible with old devices/versions.
Official? No. 

Trusted? Well that depends on who you trust. Rootzwiki has a list of the GApps packages for all Android versions. 

Now for the rant part: Google understandably and thankfully doesn't support old versions.  The ROI is getting lower and lower with the older platforms. No person in their right mind would support 1.6 when they have 4.1 out there and a newer version in the works.