Roseburg Shamrocks

The Eugene Blues, Salem Raglans and Vancouver Soldiers teams joined Roseburg as charter members to begin the season.

The National Association ruled Vancouver, Washington was within the territorial limit of the Portland, Oregon franchise of the Pacific Coast League.

[2] While travel costs and low support were cited as a reason for folding, team turmoil may have also played a role.

In addition to funding issues, it was reported that on July 5, 1904, during their last game, Roseburg Shamrock players had an argument with manager Turkey Morrow.

The local Roseburg The Plaindealer, published a letter to the editor saying, "nothing kills [a] sport quicker than empty benches."