This nice shot shows American actress Adele Mara, née Adelaide Delgado, who got into show business when she was discovered in her early teens by bandleader Xavier Cugat, and performed with his orchestra as a singer and dancer. From there she naturally pursued roles in film and had a long career on the screen, appearing in such productions as Traffic in Crime, Passkey to Danger, Blackmail, and I, Jane Doe. This image is probably from around 1950.
Even if she could fit in the slot she’d be returned due to lack of postage.