I have scoured all the sources I thought might have these features in vector format but all I've found are maps upon maps. Here's or here examples of what I'm looking for; I've tracked down the original sources but no digital versions. The data download link here is broken and I've gone through every snapshot on Wayback Machine, no luck. Anyone familiar with other possible sources for this data? It's super frustrating to see so many maps depicting these fields but on data access.