Subseries contains technical drawings of assorted equipment. Includes technical drawings for Engines and Turbines, Gas Compressors, Exchangers, Heaters and Coolers, Fans, Trays, Tanks, and other.

Sub-subseries contains Clark Brothers technical drawings.

Sub-subseries contains Cooper-Bessemer Corp. technical drawings.

Subseries contains technical drawings of generators, engines, and turbines.

Sub-subseries contains technical drawings (predominately Canadian Westinghouse Co.).

Sub-subseries contains a technical drawing for a pilot control valve.

Subseries contains technical drawings of various compressors/compressor parts.

Sub-subseries contains technical drawings for Turner Valley Clarke and Superior gas compressors

Subseries contains technical drawings of heaters, exchangers, and coolers (predominately C.F. Braun).

Sub-subseries contains C.F. Braun & Co. technical drawings for various heat exchangers.

Subseries contains technical drawings of fans.

Sub-subseries contains a technical drawing for a proposed addition to facility fans.

Subseries contains technical drawings of bubble trays, caps, pumps, risers, etc.

Sub-subseries contains technical drawings of pumps.

Sub-subseries contains Goulds Pumps Inc. technical drawings.

Sub-subseries contains technical drawings of pump from various manufacturers.

Sub-subseries contains technical drawings (predominately Jackson Engineering Corp.)

Sub-subseries contains technical drawings of various pumps.

Sub-subseries contains technical drawings of bubble trays (predominately by C.F. Braun & Co. and Madison Natural Gas Co. Ltd.).

Subseries contains technical drawings of bubble trays, tube bundles, etc.

Sub-subseries contains a technical drawing of trays, drawn by Fritz W. Glitsch and Sons Inc.

Sub-series contains technical drawings of tube bundles, floating and head ends (predominately by Madison Natural Gas Co. Ltd.).

Sub-subseries contains a technical drawing of girbotol unit trays.

Sub-subseries contains technical drawings of heat boilers and tanks (drawn by C.F. Braun & Co. and other).

Subseries contains technical drawings of heat boilers, storage vessels and tanks.