There's a reasonable analysis here:
http://www.helium.com/items/693796-poetry-analysis-acquainted-with-the-night-by-robert-frost
"Salthouse Docks, Liverpool" and "Night-time" were both Victorian paintings by John Atkinson Grimshaw. I altered the last one a little to fit the format - here's the original:
http://tinyurl.com/ydvbeov
I have been one acquainted with the night.
I have walked out in rain -- and back in rain.
I have outwalked the furthest city light.
I have looked down the saddest
آی-ویدئو