I need to confess that I had never heard of Breckenridge until I stumbled across one of his paintings on the internet. Turns out that he was both versatile and did good work in a variety of genres: no one-trick pony he.
Below are examples of most of the genres he worked in. I think he was especially good using bold compositions and bold colors.
I don't have a date for this, but will assume for now that it's not a late painting.
Reminds me of California Impressionist Charles Rollo Peters' work.
Now for some conventional portraits ...
Here is a "highly finished" painting.
A few years later, this portrait is still representational, but the color scheme has a whisper of Fauvism.
Philadelphia was quite art-conscious in the early 1900s, and being an instructor at the city's prime art school, Breckenridge must have made a point to be aware of the state of European Modernism in its various forms.
Really a pure abstraction, but the cloisonné outlining and bold colors suggest some Frank Brangwyn influence. A nice painting.
On the other hand, this composition seems pretty messy.
A much nicer seaside view with colors that remind me of other artists' paintings of Venice Lagoon scenes.
Surrealist art was just getting going about the time he painted this, but its effect strikes me as prefiguring 1930s Surrealism.
More bold colors with hints of Cubism and representationalism.
Yet another strong, colorful painting.
Unfortunately, I have no date for this. The weak colors are not helpful.