Ray, If you type these words, street in Balsall heath 1890, in the search box , top right of page, then click on search, then when page comes up, scroll down until you find those words on l/h side of the page, click on them and another page will come up, scroll down and you will find two street plans of areas of Balsall Heath. Between them you will find Longmore St on the first one & Hallam St on the second one, plus surrounding roads & streets. Although it says 1890, the streets were the same when I lived in the area 1949 to 1961. Hope this helps.
Malc.