The first is the Model AT, which has three styles:

On the left is the first style AT, it used the small #2 Eagle aluminum reproducer in the almost vertical position. One big problem with all the AT models is the use of pot metal for the chassis and carriage assemblies. This one is an early production and has no pot metal parts. In the center is the second style AT, this style used the same fancy cabinet as the first version. The reproducer is a #5 D-1 which is relocated on to a high arm assembly and positioned in a horizontal plane to gain some additional force to try and extract more sound from the reproducer. On the right is the third and last style AT. The only change from the previous style is the larger and plainer style case.
The second group is the Model BV family, also three styles:

In the middle is the BV, one of the smallest cased machines from Columbia. The BV reproducer is built into the carriage frame and unique to this model. On the left is the model BVT, this has a tonearm attachment that is bolted to the rear of the cabinet as in all the other tonearm models. This style is rarely found with a banner decal as seen on all the other Columbia machines. On the right is the Oxford Talking Machine sold through Sears & Roebucks. This model has a removable back bracket that is secured by a clamp & screw at the rear of the bed plate, interestingly this model is usually found with the Columbia banner decal.
1908 Sears Catalog page:

Hope you enjoy the photos.
Chuck