Quartiere XI Portuense, sector B, on Tavola 33a, the southern continuation with a Tiber loop, a double railway line and Via della Magliana.
Source: Old map, public domain
Two parallel rail tracks cross the sheet from west to east beneath the river loop, and Via Portuense bounds the lower edge in grey-blue. A taped paper strip sits at the top centre, and numbered plots, some coloured yellow or pink, cluster along the road in the north.