PHOTO TROUVÉE
French historian Michel Frizot and photo researcher Cédric de Veigy cull 285 amateur and anonymous photographs from flea markets and antiques shops for this collection of “found photos.” (Phaidon Press, $40)

REAL PHOTO POSTCARDS
Harvey Tulcensky has been collecting real photo postcards, popular at the turn of the 20th century, for more than 20 years, and he now has more than 3,000. This slice of his collection—which includes the message written on the back of each photo and collector’s notes—creates a snapshot of turn-of-the-century American life. (Princeton Architectural Press, $20)

ANONYMOUS: ENIGMATIC IMAGES BY UNKNOWN PHOTOGRAPHERS
Robert Flynn Johnson, a collector of anonymous photos, organizes 200 found images into themes of life—love, war, travel, family, nature, and more—and includes thoughtful commentary on these “accidental artists.” (Thames & Hudson, $30)