It seems like it may be from an "old" book. I did find it at the following website: https://wakandalegendbasenji.com/basenji-in-africa/ The site owner should be able to tell you something about where they found the photo.
Is Rocko a Basenji Mix?
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Hi everyone!
I just adopted this beautiful little boy yesterday from a local animal shelter. I named him Rocko after the 90s cartoon Rocko's Modern Life. While I was walking around the shelter various people started throwing breed names at me as for what kind of mix Rocko is but nobody knew for sure. One of the breeds I was told was a Basenji mix of some sort, after looking them up online and thinking about his very quiet nature I thought maybe this fit him. I wasn't entirely sure so I decided to come to the experts that would know, other Basenji owners.
So, what do you guys think? Is he a Basenji? Does he have Basenji in him? Or do you think he's some other breed?