Raugust-Mathwig, Inc., a corporation, was the sole general

partner of a limited partnership. Calvin Raugust was the major shareholder of this

corporation. The three limited partners were Cal-Lee Trust, W.J. Mathwig, Inc., and W.J.

Mathwig, Inc., and Associates. All three of the limited partners were valid corporate

entities. Although the limited partnership agreement was never executed and a certificate of limited partnership was not filed with the state, the parties opened a bank account and began conducting business.

John Molander, an architect, entered into an agreement with the limited partnership to design a condominium complex and professional office building to be located in Spokane, Washington. The contract was signed on behalf of the limited partnership by its corporate general partner. Molander provided substantial architectural services to the partnership, but neither project was completed because of a lack of financing. Molander sued the limited partnership, its corporate general partner, the corporate limited partners, and Calvin Raugust individually to recover payments allegedly due him. Against whom can Molander recover? Explain.