Confined thin film melt polymerization (CTFMP) of 2,6-acetoxynaphthoic acid between glass surfaces, both above and below the monomer melting point, results in its polymerization-crystallization as lamellar, extended chain, single disclination domains and single crystals of poly(2,6-oxynaphthoc acid)(PONA). CTFMP between mica results in heterotropic epitaxy, the c-axes of the PONA lying parallel to the three equivalent <100>, <110> mica directions. CTFSP (solution) can result in either heterotropic or homeotropic epitaxy; in the latter case the molecules are normal to the mica surface. Low temperature bulk polymerization permits characterization of the monomer "melt" from which the polymer grows: FTIR indicates the presence of a small amount of ester bonds. The polymer formed also consists of 100Å thick lamellae: heating above T results in rapid chain extension. CTFMP under pressure results in a new crystal form with a physical repeat distance of 23.6 Å the unit cell has not yet been defined.