Some of these images are on the businesses page of the Garon family website. This Zien's Grill photo is an exact match and this Captain's Table photo is clearly from the same series. 

I don't know if this is the original source, but the main webpage provides a contact email, so you can always ask where they found them.

Do you know how many photos in total are in the series? If you search garon.us/images2/bus for files with 1963 in their name, you should be able to find at least 12 photos from the series (plus a few other things from 1963). The links in my first comment suggest that some of the photos from this series may not have the year in their file name, but it seems that most, if not all, are on this page.

Good find Gina! I started with Minnesota Reflections as well (as I always do for the mystery photos) and came up with nothing. This doesn’t seem to be exactly what Steph wants, which leads me to believe there might be a lack of clarity in what we are looking for. 

In this image I have uploaded to Imgur, you can see the same cropped section from three different images -- two men talking outside the Cafe Hotel Saratoga Bar.

The image on the left is from Steph’s Google file. 

The center image is from the Garon family photo collection.

The image on the right is from Minnesota Reflections. 

As you noted, Gina, all three images must come from the same film negative. Not only the position of the two people here, but the positions of all the people across the Minnesota Reflections series match with Steph’s photos, along with countless other details. 

The processing of image that came from this same negative, however, is just as clearly quite different. I used a darkroom in college and this is about the extent of my film expertise (and hopefully somebody with more knowledge can improve/correct my conclusions) and I can’t say if multiple sets of prints were made from the same negative or if the difference are a result of different scans of the same set of prints. 

I believe Steph is saying that she found this series online, but processed in manner of the images on the Garon family page, not like on the Minnesota Reflections page. 

While the images on the Garon family page appear to be from the same print or scan as Steph’s images, this image set is much less rich in detail than the Minnesota Reflections scans (look at the musical notes around the trumpet or the reflection of the man in the doorway, visible only in the far right image). This lack of detail seems to come from the contrast being much, much higher in Steph’s images, so high that all the detail in the doorway has become an undifferentiated black area in Steph’s image set. With even a basic photo editing program, you should be able to recreate this same high contrast effect on the Minnesota Reflections images. I was able to approximate the effect using the picture tools in Microsoft Word, the most basic of photo editors. 

That being said, you might want the photos as the artist created them. But at this point, it’s not clear if the photographer only took the picture and left the processing of the negatives to others, if the different images are simply the result of different scanner settings of a set of photographs that were processed by the artist, or if one set of images was actually processed by the artist and the other set by someone else. So I suppose those are some more mysteries around these mystery photos.