A CATALOG OF CANDIDATE FIELD HORIZONTAL-BRANCH AND A-TYPE STARS .2.

We present coordinates and brightness estimates for 4175 candidate hel d horizontal-branch and A-type stars, in the magnitude range 10 less t han or equal to B less than or equal to 15.5, selected using an object ive-prism/interference-filter survey technique. The candidates lie pri marily in the northern Galactic hemisphere and complement a previously published sample of southern Galactic hemisphere candidates. Availabl e spectroscopy and photometry indicates that the great majority of the candidates are likely to be bona fide members of either the field blu e horizontal-branch population or the blue, metal-deficient, high surf ace gravity stars referred to by Preston, Beers, & Shectman as BMP sta rs. The remaining stars in the catalog are likely to be a mix of metal -deficient turnoff stars, metallic-line (Am) stars, held red horizonta l-branch stars, optical doubles with overlapping objective-prism spect ra, and (particularly among the fainter candidates) inadvertently incl uded late-type stars.