- Frank D. Neubert, Leo Neubert, and Charles A. Neubert, a copartnership trading as the Castle Packing Co.1
- Gentile Bros. & Co.1
- Gordon Milboume and Morris Milboume, copartners trading as Milboume Oyster Co.1
- Guss Forbush & Sons1
- Harry L. Conley, trading as the Leib Packing Co.1
- Harry M. Woodburn, trading as H. M. Woodburn, Solomons, Md.1
- Herbert L. Lawson, trading as the Star Oyster Co.1
- Herman A. Woodfield and William F. Woodfield, copartners, trading as Herman A. Woodfield & Bro., Galloways, Md.1
- Herman S. Thompson, trading under his name and as Thomas & Thompson1
- Isaac W. Lawson and Norman B. Lawson, copartners, trading as I. W. Lawson & Co.1
- Ivy L. Leonard and Thomas B. Leonard, copartners, trading as I. L. Leonard & Co.1
- Ivy L. Leonard and Thomas B. Leonard, copartners, trading as I. L. Leonard, Cambridge, Md.1
- J. J. Underhill Co., Baltimore, Md.1
- J. Langrall & Bro., Inc.1
- J. Loren Sterling, Ira R. Howard, and Morris L. Milbourne, copartners, trading as the Milbourne Oyster Co.1
- Jacob J. Lansburgh, trading as the J. J. Lansburgh Co.1
- James W. Nelson and Sherwood L. Ford, copartners, trading as the Ford Oyster & Crab Co., Crisfield, Md.1
- John M. Clayton and Carl L. Veach, copartners, trading as J. M. Clayton & Co.1
- John T. Handy Co. (Inc.)1
- Joseph C. Lore, Joseph C. Lore, Jr., and Gordon I. R. Lore, copartners trading as J. C. Lore & Sons1