This website has all of Dickens’ books online, available with full search facilities.
Here you can find all the articles in the two magazines Dickens edited from 1850 to 1870: Household Words and All the Year Round. They are fully searchable and reproducible.
The first port of call in London for anyone having an interest in Dickens. It is situated in Doughty Street and was where Dickens lived from 1837 until 1839.
Grethe is Danish, but knows her Dickens – as I can vouch for. Her Literary walk incorporates Dickens but she could organise a specialist walk on Dickens for you.