Welcome to Baltimore-Town, Hon

This puzzle was created to bring geocachers to a very historic, and oft overlooked, area of Baltimore. To complete this short field puzzle, you will walk around to some of the nearby buildings and gather information off of the historic/informational plaques. There are waypoints to help you find where you are going. This cache should take no more than 20 minutes to obtain the information and retrieve the cache. There are many places to park nearby, but few of them are free. The cache is located within a short distance of where you are starting from. During weekdays, there will be plenty of muggles about area, but this area is much quieter outside business hours. The information necessary to solve this puzzle is available 24/7, but please use your street smarts if you come to solve durring off hours, and be very cautious crossing streets. The buildings are open to the public at various times, please explore them if you can (most are free). Finally, it took a decent amount of time and effort to create this puzzle. Logs will be verified and deleted at C/O's discretion if they don't match. 

The tour begins in a spot that symbolizes what Baltimore is best known for, historically. The plaque in this location will inform you that the Star Spangled Banner, the song which would eventually become the National Anthem, was first publicly performed on this spot, set to music from John Stafford Smith.

A = Last two digits of year song was performed here, minus 10

Looking behind you across the cobblestone street (Holliday St), you will see Baltimore's historic City Hall. The building is a beautiful example of the Second Empire Architecture style. Next to a door at ground level near the grand staircase is another plaque.

B = Number of years elapsed between the cornerstone's placement and the dedication of City Hall

To your right, carefully cross both Holiday and Lexington Streets to get to the northeast corner of the intersection. Continue north on Holiday St past the church to the second building on the right. This location is the Peale Museum. It was originally built as a Natural History Museum and Gallery of the Fine Arts. For a time, it served as City Hall of Baltimore. Currently the museum is being renovated and relaunched as the Peale Center for Baltimore History and Architecture, and expects to fully reopen in 2020. In front of the entrance to the buidling is a plaque that depicts Rembrandt Peale demonstrating the first use of natural gas as a light source in North America. Peale would go on to incorporate the first American gas company, which would eventually become today's modern Baltimore Gas and Electric utility.

C = Last digit of the year the Peale Museum became Baltimore's City Hall

Walk back south on Holliday towards Lexington. At the corner you will notice the arched entranceway to the Zion Lutheran Church. The congregation was founded in 1755 to meet the needs of Lutheran immigrants from Germany. German immigrants played an important role building early Baltimore into a bustling port city. Interestingly, the church is the only one left in Maryland which still holds weekly services in German. Read the plaque on the right side of the arch. If you have time, you can walk around to the Gay St side of the church to see the original entrance of the church after you get the next clue.

D = Last digit in the year the chuch's current building was completed, divided by 2

Next you will continue walking East on Lexington towards Gay St. You will pass the Baltimore City Fire Department Headquarters building. On the Southeast corner of the building is a plaque displaying the historic boundaries of the original Baltimore Town as they were in 1729 at the founding of the City. The spot you are standing on now would have been in Harrison's Marsh, adjacent to the Jones Falls, which at the time was a source of fresh water. On the plaque in front of you, the old boundaries of Baltimore Town are demarcated by stars.

E = Number of stars on the plaque which mark the boundaries of Baltimore-Town

For your final clue, carefully cross first Lexington and then Gay St to come to the Southeast corner of the intersection. You are standing in front of the War Memorial Building. Built in 1925 to honor Marylanders who perished in The Great War, it is still a very important civic building today, holding many public meetings and events. It is free and open to the public during city business hours. There is a museum of military gear and other historic artifacts on the first floor, and inside the great hall on the second floor are the names of the men who died fighting in World War 1. Next to the side entrance on Lexington St, there is a plaque that will tell you the number of names written on the marble walls inside the hall (WXYZ).

If WXYZ is the number of names written on the wall, take the 2nd digit X, subtract the third digit Y and then add the last digit Z.
F=X-Y+Z

Checksum: A + B + C + D + E + F = 26

The cache is located very close by, and is a small magnetic container with a log. BYOP.

Congrats to sfcchaz on FTF and building his FTF streak to 10 years, as well as helping work out a few bugs with the initial clues!