Some of these items are listed in the OCLC WorldCat with locations only at one or two libraries in the United States, so I have not been able to see them.

Lamson Consolidated Store Service Company. Report of the annual meeting. 1890s

Mechanical messengers. 1900s

The story of a service idea: a history of the origin and development of Lamson service. 1912. 85 p

Lamson Consolidated Store Service Company. 20 bulletins. 1910s

Better store service: with Lamson Cable Carriers. 1920

Lamson pneumatic tubes for conveying papers and merchandise. 1920. 36 p

Lamson wire line carriers: and how they give better store service in retail stores. (Boston: Lamson, ca. 1917). 32 p "The first store service cash carrier was installed by Lamson over thirty-five years ago... Over 100,000 stations are in use." It lists other booklets on Pneumatic Tube Systems, Electric Cable Systems, Belt Conveyors for Parcels and Parcel Delivery Bins as well as industrial carriers and conveyors.

Lamson wire line carriers: and how they give better store service in retail stores. (Syracuse NY: Lamson, ca. 1932). 32 p Contains some of the same photographs as the above, but without naming the locations. "The first store service cash carrier was installed by Lamson over fifty years ago... Over 500,000 stations are in use."

The Lamson training manual. 1930-39?

Engineering drawings for conveying machinery ("Pneumatic Tube System") for the Library of Congress, Washington D.C. 1938-9

"Lamson sales document from around 1930" on Brass Registers website. Illustrations of:

• Cash room arranged for 250 independent stations
• A glimpse of R.H.White & Co's mammoth store
• Cash room for 17 stations - independent lines
• General view S.S.Pierce Co's store, Boston Mass.
• Cash room for 15 stations, combination system
• A corner of Besse Rolf & Co's store, LNNN, Mass.
• Three station combination system
• Triplicate power plant, capacity 400 independent stations: R.H.White & Co. Boston, Mass.
• Single power plant, capacity 25 independent stations: S.S.Pierce & Co. Boston, Mass.
• A few of our various terminals for 2 1/4 inch tubes. (Tubes are labeled Meteor Despatch Co. Boston, Mass.)
• Foot powered pneumatics

Airtube: on target with Lamson Airtube systems. (Syracuse, NY: Lamson Corp., 1952). 50 p