Recently restored, nearly 300-year-old painted angels, at top right, adorn an arch at the historic Old North Church in the North End neighborhood, Friday, Dec. 20, 2024, in Boston.

Recently restored, nearly 300-year-old painted angels, at top right, adorn an arch at the historic Old North Church in the North End neighborhood, Friday, Dec. 20, 2024, in Boston.

Recently restored, nearly 300-year-old painted angels, at top right, adorn an arch at the historic Old North Church in the North End neighborhood, Friday, Dec. 20, 2024, in Boston.

In Boston’s Old North Church, tour guides shepherd a steady stream of visitors through the red brick building, pointing out the giant paned windows, chandeliers and instruments that embellish the ...

Conservator Corrine Long restores nearly 300-year-old painted angels on walls of Old North Church in Boston. (Steven Senne/AP) ...

Conservator Corrine Long, of Dover, N.H., restores nearly 300-year-old painted angels on walls of Old North Church, Wednesday, Dec. 18, 2024, in Boston. (AP Photo/Steven Senne) ...

300-year-old angels were painted over at Old North Church. An effort is underway to restore them. Paint conservators are restoring 300-year-old murals of angels that have been hidden since 1912.

Old North Church’s oldest artifacts, four wooden angels, repaired and reinstalled ahead of holiday services By Maggie Scales Globe Correspondent, Updated December 18, 2023, 4:45 p.m.

Recently restored, nearly 300-year-old painted angels, at top right, adorn an arch at the historic Old North Church in the North End neighborhood, Friday, Dec. 20, 2024, in Boston.

Conservator Corrine Long, of Dover, N.H., restores nearly 300-year-old painted angels on walls of Old North Church, Wednesday, Dec. 18, 2024, in Boston. (AP Photo/Steven Senne) ...

Conservator Corrine Long, of Dover, N.H., restores nearly 300-year-old painted angels on walls of Old North Church, Wednesday, Dec. 18, 2024, in Boston. (AP Photo/Steven Senne)© Steven Senne ...