Sorry I'm replying again before my last reply got approved. But here is a sample to show that it's not all that difficult to import these into Google Earth. This took me about 10 minutes. I first georeferenced to Polyconic Projection. Then converted to Geographic Projection. Then created SuperOverlay. Then uploaded to Server. Would take less time per image if done in batches. I'm willing to do everything but the Georeferencing.

San Francisco Bay AMS Map Test