"h.p. lovecraft and others" is not a sub-title and should^W has been deleted from the sub-title field.
(a sub-title is typically an alternative title to, or sometimes an extension of, the main title.
examples include that of j. r. r. tolkien's "the hobbit" which in full is:
"the hobbit: or, there and back again" (21/9/1937) q.v.,
where "the hobbit" is the main title, and "there and back again" is the sub-title.
the separation between main & sub-title may be a colon, or a line-break; or a comma, or almost anything else the author - sometimes, the publisher - determines.
but a piece of publisher's puffery, or advertising, or explicatory "strap-line", or series id, is not a sub-title.)
reprint anthology of six short stories, three poems, two novelettes and a novella,
nf introduced by lin carter, the editor
ballantine books near-identical first printings, first edition, sharing cat#, sbn and
cover art by gervasio gallardo (signed, credited)
cover price 95¢
276pp. including titles, indica, table-of-contents etc, end pp. advertising
refer to indica to see if carcass of copy held was canadadian- or merkin- printed.
no priority established nor liable to be, both state first printing: october, 1971
(possibly printed on the covers of canadadian copies:) it may indicated whether these were the merkin-printed covers shared, or separately-printed in canadada:
advice by any bookcatter holding a canadadian-printed copy appreciated