Here's an updated list of local comic/science-fiction/anime/etc. conventions in the Colorado area in 2019! I didn't expect an update this late in the year, but I found one more...
ForeverConNovember 29-30
Mini Comic Con 2019
December 7
And a cosplay photo -- Bombshell Harley Quinn and Fear and Loathing in Las Vegas Joker at StarFest 2019:

Tomorrow's wallpaper
Recent cover scans I added to GCD:
Archie 1955 2 cover b
The Electric Dinner
Future Foundation 4
History of the Marvel Universe 5
Invisible Woman 4
Warlord of Mars Attacks 5 cover c