Picasso painted 44 studies of Diego Velázquez's painting Las Meninas between 17 August and 30 December 1957; Lump appeared in 15 of them.
Picasso melukis 44 kajian dari lukisan Diego Velázquez Las Meninas antara 17 Agustus dan 30 Desember 1957; Lump muncul pada 15 diantaranya.