Quad lighting units
Subtitle: industrial and commercial
Series: Catalog -- no. 4; Catalog -- no. 4.
Publisher: [Quadrangle Mfg. Co.]
Published: 1930
Place of publication: Chicago]
Language: eng
Number of pages: 45
Subjects: Catalogs; Lighting; Equipment and supplies; Lighting Reflectors; Quadrangle Mfg. Co
Notes: Title from cover.

"A.I.A. file number 31-F-2."

Price list ([12] p.) affixed to p. [3] of cover.

Includes index.