As I'd been focused on the "Then and Now" theme, I'd neglected to do more "fun" searches of this large set of photographical archives. Here's what I found when I searched for the terms Sidecar and Motorcycle, I hope you enjoy these photos as I did. Note: Unless noted otherwise, source of all photos is from the link above.
Circa 1910-1920, near the Archer Canal in Denver
The tug is a Thor Motorcycle, the logo on the sidecar appears to say Rogers
"That is not a happy looking monkey"
arl18, date unknown
Otha Rice, a Denver Businessman, here as a teenager astride
an Indian Motorcycle.
A Denver neighborhood with a motorcycle parked out front.
Man on Excelsior Autocycle, near Archer Canal, Denver
Man standing with motorcycle, on Alameda Avenue, Denver
The engine/transmission is in the front wheel!
Harry M. Rhoads and his Daughter
He was a Denver Post Photographer who apparently
rode this Indian motorcycle to assignments.
View of the Gates Rubber Co. Building circa 1910-1920
Closeup below is of the motorcycle shown in the photo above.
It kind of looks like an Indian Motorcycle but not sure.
Closeup of Police Officer and motorcyle
in front of ambulance.
Anyone recognize the logo on the gas tank?
Old and New Steeds at an Play Fair Opening Day
Celebration in Central City, CO.
An early motorcycle race circa 1910-1930
Winter-Weiss, got its start apparently with sidecars, and
later on manufactured trailers for the military during WWII
Below three pictures were some of their products.
Next time you think it's a bother to bring along that small point and shoot camera:
Harley-Davidson Motorcycle and Winter-Weiss Sidecar platform
Mobile advertising at its best, back in the day.....
An Indian Motorcycle with a Winter-Weiss Sidecar Platform
and an oversized Milk Bottle.
Hope you enjoyed this peak at yesteryear in terms of motorcycles here in the great state of Colorado. If you can identify any of the motorcycles more fully, please let me know.