For years Mr. Bluemlein would ask friends and acquaintances for their signatures. He carefully studied the most outstanding of these seeking unusual manipulations of the pen and relationship of lines and curves which gave them character. Sometimes a single letter would be the key to a complete alphabet. Mr. Bluemlein interpreted the signatures, changed, organized and embellished them into a series of 32 script alphabets. He did this by projecting the signatures to a large size thus enabling him to pick out the character notes.
The script alphabet titled Mr. Ronald G. Sheppards was made into a typeface long before 2004: Photo-Lettering adopted it for phototypesetting. Their version is called Fourth of July, and is shown in the Alphabet Thesaurus, vol. 1 from 1960. [Edit: it was earlier shown under the name Penobscot Brush Script, see their 1950 catalog.]
It’s probably this version that was used for the cover of the only album release by Nature’s Divine from 1979. The 10-member funk/soul group with roots in Detroit had a Top 10 R&B hit with “I Just Can’t Control Myself”.