  New, updated, and/or revised CCD parallaxes determined with the Strand
Astrometric Reflector at the Naval Observatory Flagstaff Station (NOFS) are
presented. Included are results for 309 late-type dwarf and subdwarf stars
observed over the 30+ years that the program operated. For 124 of the stars,
parallax determinations from other investigators have already appeared in the
literature and we compare the different results. Also included here is new or
updated $VI$ photometry on the Johnson-Kron-Cousins system for all but a few of
the faintest targets. Together with 2MASS $JHK_s$ near-infrared photometry, a
sample of absolute magnitude versus color and color versus color diagrams are
constructed. Since large proper motion was a prime criterion for targeting the
stars, the majority turn out to be either M-type subdwarfs or late M-type
dwarfs. The sample also includes 50 dwarf or subdwarf L-type stars, and four T
dwarfs. Possible halo subdwarfs are identified in the sample based on
tangential velocity, subluminosity, and spectral type. Residuals from the
solutions for parallax and proper motion for several stars show evidence of
astrometric perturbations.
