After more than three years of planning, pandemic setbacks, and moving collections out and back, Princeton University Library’s (PUL) Seeley G. Mudd Manuscript Library is reopening its doors to the University community. Modernizing the building’s fire suppression system was the renovation’s original impetus, but ultimately, many parts of the library were upgraded to provide an additional classroom, more efficient environmental controls, better lighting, enhanced security, and improvements to the electrical and plumbing systems.