Almost done!

SELECT * FROM gallery2 WHERE topic_id="1595709" UNION SELECT * FROM gallery2 WHERE topic_id="1115966" UNION SELECT * FROM gallery2 WHERE topic_id="1787656" UNION SELECT * FROM gallery2 WHERE topic_id="1730119" UNION SELECT * FROM gallery2 WHERE topic_id="1438569" UNION SELECT * FROM gallery2 WHERE topic_id="1137046" UNION SELECT * FROM gallery2 WHERE topic_id="909760" UNION SELECT * FROM gallery2 WHERE topic_id="490259" UNION SELECT * FROM gallery2 WHERE topic_id="951249" UNION SELECT * FROM gallery2 WHERE topic_id="543156" UNION SELECT * FROM gallery2 WHERE topic_id="491546" UNION SELECT * FROM gallery2 WHERE topic_id="1052556" UNION SELECT * FROM gallery2 WHERE topic_id="1395630" UNION SELECT * FROM gallery2 WHERE topic_id="201664" UNION SELECT * FROM gallery2 WHERE topic_id="626224" UNION SELECT * FROM gallery2 WHERE topic_id="1368414"