Photograph of Bluff View Park and its surrounding area in Dallas, Texas. The park is located in the center of the picture along Pomona Road. Residential suburbs are visible in the upper portion of the picture as well as approximately five houses below the park.

Photograph of Casa Linda Park and its surrounding area in Dallas, Texas. The park, which contains a baseball park, sits near the middle of the picture, just below San Saba Drive and above a railroad. Houses are visible above the park.

Photograph of Cedar Ridge Park and its surrounding area in Dallas, Texas. An area largely covered in trees sits in the center of the photo, above a road. A large building is visible above this area, and residential suburbs sit in the top left corner. A subdivision of similar, red buildings is visible on the right side.

Photograph of some grocery shelves that are nearly empty of all produce with the exception of a few yogurt cups. This was immediately after the COVID-19 pandemic that closed everything.

Clay Jenkins, Dallas County Judge, speaks at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of exhibit at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Portrait of the Dallas Fire classmembers from June 19, 1978 to October 20, 1978 posing outside a building in two rows. The recruits are all wearing dark blue uniforms that include slacks and a long jacket that has two rows of silver buttons with a Dallas Fire patch on the left sleeve, a silver shield over the left breast, and a name tag near the right lapel. The front row is holding their hats in front of them with both hands.

Portrait of the Dallas Fire classmembers from April 20, 1981 to September 18, 1981 posing outside a building in three rows. The recruits are wearing light blue shirts with navy slacks and the front row is sitting on a wooden bench.

Portrait of the 21 Dallas Fire classmembers from November 1984 to April 1985 posing outside a building in three rows, with the men in the front row seated on a bench. They are all wearing uniforms of dark blue slacks and lighter blue, button-up shirts with a Dallas Fire patch on the left sleeve and a name tag over the right breast pocket. A printed label at the bottom of the photo lists the names in order.

Dreanna Belden, Assistant Dean for External Relations at UNT, speaks at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of exhibit at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of an exhibit at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of exhibit at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of firefighters and their equipment in the sidewalk and street in front of George's Cafe and the Knox St. Barber Shop on the 3100 block of Knox Street. There are three ladders propped up against the front of the cafe, and debris lines the sidewalk in front of the stores. Behind the buildings is a billboard for Motorola, while other shop fronts and watching bystanders are visible in the background. There is a telephone pole in front of the cafe that extends out of shot. On the back of the photograph are handwritten notes and a stamp giving information about the photo.

Wide-shot photograph of four firefighters in firefighting suits, hosing down burning tires on the left. Two of the firefighters hold one hose while the other two hold another hose, pointed at a spot farther away. A large tree stands just beyond the farthest firefighters, and there are more trees barely visible in the background. There are a few stacks of tires obscuring the closest firefighters and much of the background on the left is obscured by smoke. On the back of the photograph are a label and two stamps giving information about the photo, including the photographer and date.

The famed English locomotive, London and North Eastern Railway's No 4472, "The Flying Scotsman" with its nine car consist leaving Dallas early on the morning of June 20, 1970. A southbound KATY freight train waits on the siding.

John H. Slate, city archivist, speaks at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Aerial photograph of the Keenland Escarpment Park featuring a two lane highway surrounded by forests and dry brushland that gently curves off to the left side of the photograph. A residential community and a commercial building are also visible.

Photograph of Lee Harvey Oswald items on display at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Lee Jackson, chancellor of the University of North Texas System, speaks during "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of an aerial view of a basic dirt baseball field and an open field covered in clusters of trees. The background of the photograph features residential structures with paved asphalt streets that transition into dirt roads.

Photograph of police reports on display at "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of a Reporter at the "Code Three: Selections from the John F. Kennedy/Dallas Police Department Collection" reception at Dallas City Hall.

Photograph of Robert W. Tanner (center) standing with four members of the Waxahachie Police Department. They are all standing side by side, looking at the camera and smiling. Tanner is wearing a baseball cap that reads, "Pearl Harbor/WWII/Korea/Vietnam Vet -- Retired US Air Force." The officers are in uniform.