[1] In 1850 Brogdens took a lease of the South Staffordshire Line jointly with John McClean and Alexander managed this for about six years.

[1] During the building of the Ulverston and Lancaster Railway, Alexander supervised for the firm while James Brunlees was the Engineer.

[5] Brogden unsuccessfully contested Great Yarmouth as a Liberal in July 1865, but was elected as the first member for Wednesbury in December 1868 and represented that constituency for 18 years.

[7] In 1881 it was claimed that, when Parliament was not in session, he might be found in the space of 10 days in: Ulverston, Westminster, Cardiff, Paris, Holland and St Petersburg.

The Gazette entry gives many addresses: Queen Anne's Gate and Victoria Chambers, Westminster; Aberdare; Tondu; Meathop, Westmorland; Frampton Cotterell, Gloucestershire; The Hague; Cross Street, Manchester; 46 Dulwich Road, Herne Hill; Ulverstone; Grange-over-Sands; and Wellington, New Zealand.