Maps:

1) Map of Whitechapel, 1873, showing location of various places of Ullinger interest

and here's the modern map:

View Larger Map

2) Modern Limehouse via Google maps, showing Trinidad St, formerly South St, where the Ullingers and Knaufs lived for many years

3) Map of Germany c 1860, showing location of birthplaces of Jacob Ullinger and Jacob Knauf

Map-related links:

Buy OS maps of London 1870 -1911

Online searchable map of 1862 London and surrounding areas

Booth's Survey of London (1889) - links to 1889 map of London showing streets colour-coded by 'social class', plus descriptions of each street