The title of the single released in 1980 that includes "Morning Dew" is "(Walk Me Out in the) Morning Dew" by Long John Baldry. This information was found on the Wikipedia page for "Morning Dew" [https://nl.wikipedia.org/wiki/Morning_Dew], which states that in 1980, Long John Baldry recorded the song and released it under this title on his album "Long John Baldry".