all original and largely intact early 20th century exceptional prairie style art glass window attributed to the linden glass company, chicago, il. the long and narrow oversized skillfully-crafted window was likely salvaged from an interior residential cabinet door or possibly a vestibule door. the soldered joint zinc caming is all original, but in need of restoration. the art glass window features a classic rectilinear grid with two symmetrically arranged abstract floral motifs bearing art nouveau characteristics. the bottom segment is filled with multiple geometric shapes in the form of green and pink opalescent or "slag" glass. the surrounding panels or panes of glass are clear. extensive double-crown caming used, especially along the outer regions of the window. no cracks or breaks evident. the linden art glass company was established by trained interior decorator frank l. linden and ernest j. spierling 1882, which was first identified in the chicago lakeside directory as spierling & linden in 1884. beginning in 1890, the firm was located at 1216 michigan avenue, where they remained until around 1934. at this time the company was known as the linden glass company. together (and at the same address), the two design firms advertised extensively in building trade journals throughout the 19th and 20th century as interior decorators, "furnishers", stained glass and so on. in 1910 linden glass was changed to the linden company. one of linden's first commissions was to paint the ceilings in the potter palmer house designed by henry ives cobb in 1882. frank linden was very active in the chicago architectural club and was closely acquainted with several notable chicago architects. spierling & linden focused on mural and ceiling paintings, while linden glass concentrated on furnishings. art glass was only a part of the firm's services, where about a dozen craftsman worked in the rear section of the michigan avenue building. linden glass was perhaps best known for their collaboration with architect frank lloyd wright, which included (but not limited to), the robie, dana and coonley houses, along with midway gardens. throughout the 20th century the company was involved in designing the interiors of several chicago and midwest banks (including sullivan's owatonna bank) and other institutions (e.g., mayo clinic in rochester, mn.). the company did interior work for the pullman palace car company. 24 3/4 inches x 63 inches.