Spear's latest pattern anti-clinker car heater and ventilator
Subtitle: just improved with new open work top-plate, base ring, and Russia iron heat screen : for anthracite or bituminous coal or coke
Publisher: James Spear
Published: 1887
Place of publication: Philadelphia
Language: eng
Notes: Caption title.

Estimated date of publication from accompanying dated form letter on company letterhead tipped into OONL copy.