I'm not aware of any such existing datasets, but you can make your own layer in either QGIS or Arc. Search for "create fishnets" in GIS Stack Exchange. BTW, a worldwide layer at your granularity will be immense, approaching 4 billion(!) polygons, which probably explains why you didn't find one. You may want to create such a layer at a regional scale ...
Railroads and the Making of Modern America has links to the following downloadable historical US railroad data. I didn't investigate the actual geospatial extent of these railroad datasets, so I can't promise they have Colorado railroads. Here's a wayback machine link in case the original site goes down.
Historical GIS: Depots of the ...
iNaturalist has worldwide observations of biological organisms. You can do a bulk download here. This data is not strictly "open", because login is required. However it is free to register.
Use this query to download observations of Suborder Anisoptera (Dragonflies): quality_grade=any&identifications=any&taxon_id=47927
There are currently 357100 ...
The links may help. The first is to the Douban Book Rating Dataset. It is the largest book review website in China. The second is a collection of Amazon ratings the was web scraped already by a user on Kaggle. Those are all I know of. Hope they help.
If you look at the XML for that podcast you'll see that it is structured like this
where the items are the individual episodes and the item description includes a whole lot of tags containing metadata about each episode. One of the metadata is the description tag which ...
Check out the ICDAR 2019 Robust Reading Challenge on Scanned Receipts OCR and Information Extraction: https://rrc.cvc.uab.es/?ch=13
You have to make a free account and then you can access the dataset, approximately 1000 images of scanned receipts.