[2] It is noted for its reredos designed by Mr. Goodhue and executed by prominent sculptor Lee Lawrie;[3] its organ, Opus 2761 by Austin Organs, Inc., with 64 ranks and 3721 pipes;[4] and its thirty-six stained glass windows by designers/manufacturers such as the Harry Eldredge Goodhue Company of Cambridge, Massachusetts, Wilbur H. Burnham Studios of Boston, Massachusetts, and London, England's James Powell and Sons.

[7] As the nineteenth century progressed, the western suburbs became increasingly popular as a place for city dwellers to live with the result that the number of St. John's worshipers was in decline.

[1] In 1907, financier J. P. Morgan purchased the church building and its property for the construction of a memorial gallery to be added to Hartford's Wadsworth Atheneum.

[8] The land for the current site, located adjacent to the main trolley line westbound from Hartford, was donated by longtime parishioners Dr. Thomas B. and John O. Enders.

[10] In 1914-5 a small parish house with an auditorium was added to the structure and in 1922-3 a reredos and high altar designed by Mr. Goodhue and executed by sculptor Lee Lawrie were made part of a significant improvement to St. John's interior.

A major facilities upgrade occurred in 1927 with the addition of two bays to the church to alleviate overcrowding, the construction of a large parish house with an adjacent cloister garden, and the installation of an outdoor pulpit built into a Peace Cross.