the code I wrote for this little site provides a framework that can be modified to download 1024x1024-meter georeferenced images. So, I will cobble that code together and download the missing sections of my other LIDAR map(s). Just to be clear though, this will just let me download the images you see here, not the actual LIDAR elevation data, so my new map will use the same monochrome style.
Well... what do you know? Turns out that elevation grid files compatible with my software actually *are* available from NJGIN. But, man, they make stuff hard to find unless you know where to look. They have moved all their big files to AWS (Amazon Web Services) where you can directly download with the AWS CLI (command-line interface). Never used AWS before, so this was a bit intimidating, but it's straightforward for someone familiar with unix.
Right now I'm downloading all 95gb of the new elevation data, did a test and they open up beautifully in GlobalMapper. So LIDAR in the Pines 2021 will be *much* easier than originally anticipated (although still a big project).