Given the "Denver" connection and the cryptic naming style, files like this are often found in:
It may be a specific upload on platforms like The Internet Archive containing historical local records or niche urban photography. JACROSntsofDnvr rar
If this is from a specific forum (like Reddit's r/Denver or r/UnsolvedMysteries), it might refer to a specific set of "leaked" notes regarding local urban legends. Given the "Denver" connection and the cryptic naming
Encrypted files or "leaked" archives are frequently used as plot devices where players must find a password to unlock the story. JACROSntsofDnvr rar