Alphabet developed by Carl Richard Lepsius to write African languages. Published 1855 and in a revised edition (with many more languages added) in 1863. It was comprehensive but it wasn't used much as it contains a lot of diacritic marks and therefore was difficult to read, write and typeset at that time.
Lepsius C R 1981 Standard Alphabet for Reducing Unwritten Languages and Foreign Graphic Systems to a Uniform Orthography in European Letters, , 2nd rev. edn. John Benjamins, Amsterdam
