scottvez, 5 years ago Your baseball team photo is a Real Photo Postcard (RPPC). It most certainly is a real team. It could be a high school or a town based team-- hard to say. The details are hard to see in your photographs, but it looks like it may represent a "Father/ Son" game. Based on the clothing and uniforms, I would date it to 1910- 1925.
The backs of RPPCs really aid in dating. Most typically encountered is the AZO box. Post a photo of the back to show the stamp box details and I may be able to narrow down the years.