Exterior view of the storeroom (Building 18) at the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the Northeast section of Philadelphia,…

General view of the exterior of the warehouse facilities (Building 53) at the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the Northeast…

Exterior view of the west side of the aluminum plant at the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the Northeast section of…

General view of the west side of the sulphuric acid contact plant (Building 41) at the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the…

Exterior view of a section of the zinc chloride manufacturing facility (Building 4) at the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the…

Two views of exposure racks designed to test the weathering capabilities of varnishes and other products manufactured by the Rohm and Haas Company. The racks are positioned on the roof of the company's home office…

Map depicting the facility and grounds of the Charles Lennig and Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the Northeast section of Philadelphia,…

General view of a German aircraft with a Plexiglas windshield and nose panels. Per notations accompanying the photograph, the plane is identified as a Heinkel-Flugzeug HE 111, a type of bomber designed to masquerade as…

General view of two unidentified employees working on the nose of a Douglas A-20 attack bomber aircraft prior to the installation Plexiglas windshield panels. This photograph was likely taken at the Rohm and Haas…

General view of an unidentified employee fitting a Plexiglas windshield panel onto the nose enclosure of a Douglas A-20 attack bomber. This photograph was likely taken at the Rohm and Haas Company plant located in…

General view of several unidentified employees installing Plexiglass panels on the nose of a Douglas A-20 attack bomber. Per notations accompanying the photograph, the two halves that form the nose of the bomber are…

General view of an unidentified male employee polishing a curved panel of Plexiglas designed for use on the nose of an aircraft attack bomber. Several finished panels are visible in the background. Per notations…

General view of two unidentified employees making adjustments to a Douglas A-20 attack bomber in production at the Rohm and Haas Company plant located in Bristol, Pennsylvania. Several attack bombers, awaiting…

General view of an unidentified employee using a router to smooth the edge of a curved Plexiglas panel designed for use as an aircraft windshield. Per notations accompanying the photograph, the edges of the panels are…

General view of an unidentified employee using a band saw to trim a curved Plexiglas panel designed for use as an aircraft windshield. This photograph was likely taken at the Rohm and Haas Company plant located in…

General view of an unidentified female employee polishing a curved panel of Plexiglas designed for use as an aircraft windshield. This photograph was likely taken at the Rohm and Haas Company plant located in Bristol,…

General view of an unidentified female employee polishing a curved panel of Plexiglas designed for use as an aircraft windshield. This photograph was likely taken at the Rohm and Haas Company plant located in Bristol,…

Robert Abercrombie Lovett (1895–1986) praises the employees of Rohm and Haas for their workmanship on B-25 aircraft, which contributed to a successful attack against Japanese forces.

The Rohm and Haas Company was…

James H. Doolittle (1896–1993) expressed his gratitude to the employees of Rohm and Haas for their contributions to the construction of bomber planes, which helped make a successful attack against Japanese forces…

Phoebe Waterman Haas (1882–1967) thanks Stanton C. Kelton for inviting her to the Army–Navy ‘E’ Award ceremony. The Army–Navy "E" Award was given to companies whose production facilities achieved "Excellence in…

General view of Plexiglas plotting and status boards in use at an Air Force communications school located at Keesler Field in Biloxi, Mississippi. As visible in the photograph, personnel receive reports from radar…

General view of several rows of Plexiglas panels positioned on racks. Per notations accompanying the photograph, the panels are set up for an outdoor exposure test designed to demonstrate the weathering capabilities of…

General view of a Union Pacific Railroad car featuring Plexiglas panels concealed under metal screens. Per notations accompanying the photograph, this box car was used to test and measure the movement of the panels and…

General view of a Triton kettle located in Building 26 of the Rohm and Haas Company chemical manufacturing plant in Bridesburg, a neighborhood located along the Delaware River in the Northeast section of Philadelphia,…

General view of an exhibit panel on agricultural chemicals, including fungicides, miticides, and emulsifiers, exhibited at the 1956 Rohm and Haas Company stockholders' meeting.

The Rohm and Haas Company was founded in…