This is the domain of Ernst Kers. There are sites or pages about the Trams in:

Porto Trams Lisbon Trams Coimbra Trams Sintra Trams Rotterdam Trams A Coruña Trams

Porto, Lisbon, Coimbra, Sintra, Rotterdam & A Coruña

and the Azores railway

Este é o domínio do Ernst Kers. Há os sites com os assuntos:


Eléctricos do Porto
site

Caminho do ferro nas Açores
página
Dit is het domein van Ernst Kers. Hier is een site over:


Rotterdamse trams
 site