@misc{Gainsborough_Thomas_(1727-1788)_Portrait_[ca,
 author={Gainsborough, Thomas (1727-1788)},
 title={Portrait of Mrs Siddons},
 address={London},
 year={[ca 1910]},
 language={eng},
 type={pocztówka},
 publisher={[s.n.]},
 keywords={Karty pocztowe, Karty pocztowe -- 1900-1945},
}