Some time ago I mentioned the 150th anniversary of the opening of the Brentford Dock river/railway interchange (now covered in flats, of course). It's inevitably therefore the 150th anniversary of the connecting branch line from Southall to Brentford. Southall Railway Centre put together a small display of pictures and articles about the line; for a while it was in Brentford's Musical Museum - but they charge entrance, and I'd already seen their wurlitzers & musical boxes - but now, until the end of the month, it's in the more accessible Ealing Library. This line of course runs pretty closely with the grand union down to Brentford, cross at Brunel's 'Three Bridges' construction pictured above. They have a better picture, a Lyons Tea advert showing all three modes of transport with Lyons branded loads, but the little digital I had with me failed to get a sharp version of that one.
Also of interest was the viaduct that carries the 'Hounslow and Metropolitan Railway' - now the Picadilly - lines over the canal & Brentford branch - they had both an early picture (there's a lot more trees etc now) and a diagram from an engineering magazine: