Star Altitude Curves
Publisher: Rodney Stokes Press
Published: 1928
Place of publication: San Diego, USA
Format: Aproximately square
Description: Black ink on pulp paper.  

Each page has an orthomorphic (Mercator) chart showing equal-altitude curves for two stars.
Table of contents: title: Each page gives equal-altitude curves for two stars.  Refraction at 5000 above Mean Sea Level is accounted for.