On the C-SPAN Networks:
Matthew Costello is a Senior Historian for the White House Historical Association with 10 videos in the C-SPAN Video Library; the first appearance was a 2018 Speech. The year with the most videos was 2019 with six videos. The year with the highest average number of views per program was 2021 with an average of 36,335 views per program. Most appearances with William diGiacomantonio (2). Most common tags: Executive Branch, Washington, George.