So I've been looking for satellite imagery to use for a project without any luck. I need images between 1975 and 1985 near the Roosevelt river in Brazil, from any satellite at any spatial/spectral resolution (could be aerial also!).
I've checked USGS Earth Explorer and there are only 4 images from Landsat 2 and Landsat 4, and they're all cloudy.
So I was just curious if anybody knew of a satellite/aerial imagery source that was flying around at that time.