Baltimore City is the first American city to install public gaslight. The innovation is born when Rembrandt Peale brings gaslight to his museum galleries in 1816. The Baltimore mayor and other dignitaries are so impressed with Peale’s gaslighting demonstration, they soon found a company in 1817 to light the streets as a means to lower crime. The ancestor of the present Baltimore Gas and Electric Company is born.
Maryland’s flag, the most popular, has a long history
The General Assembly makes new (old) flag official in 1904. Based on heraldic crests in the George Calvert family it is now the most popular and most recognized state flag. The flag was used by both sides during the Civil War conflict. A full description of the flag’s history is on Maryland Secretary of State’s website.