This section is from the book "The Building Code Of The City Of Boston", by City of Boston Building Department. Also available from Amazon: Building Code of the City of Boston.
B. The boundaries of District B hereby established are as follows, to wit:
1. All those portions of said wards one and two situated outside the line beginning and ending at the intersection of Wauwatosa street and Chelsea creek hereinbefore established as the boundary of one of the said Districts A.
2. All those portions of said wards three and four situated outside the line beginning and ending at the said Maiden Bridge, hereinbefore established as the boundary of one of the said Districts A.
3. The whole of wards ten, fourteen, fifteen, sixteen, nineteen, twenty-one, twenty-two, twenty-three, twenty-four, twenty-five and twenty-six and all those portions of said wards five, seven, eight, nine, eleven, twelve, thirteen, seventeen, eighteen and twenty situated outside the line beginning and ending at said intersection of the city line with the Charles river dam, hereinbefore established as the boundary of one of the said Districts A.
Meaning to include in the said Districts B all those portions of the said city not included in the districts hereinbefore established as Districts A.
Wherever in this order the words "harbor," "river," "creek," "shore line" or "harbor line," are found, the same are intended to mean the lines furthest towards deep water on said harbor, river or creek, respectively, on which the erection of wharves or other structures is permitted by the state and United States authorities.
Wherever the boundary line of District A is described as following a certain street, the same is intended to include all property on that side of the street which lies within the described area and also that portion of all lots on the opposite side of the street, abutting on the street, but extending to a depth of not more than one hundred and fifty feet.
Wherever the boundary line of District B is determined by the enumeration of certain streets delimiting District A, the same is intended to include all property on that side of the street within the described area, except that portion of those lots abutting on the boundary streets of District A but extending to a depth of not more than one hundred and fifty feet, which are described in the paragraph above as intended to form a part of District A.
In witness whereof, the undersigned hereto set their hands this second day of November, 1916.
Ralph A. Cram, John Grady, Patrick O'Hearn, Commission on Height of Buildings in the City of Boston.
Boston, November 2, 1916.
Then personally appeared the above named Ralph A.
Cram, John Grady and Patrick O'Hearn and acknowledged the foregoing instrument to be their free act and deed.
Before me,
Elisabeth M. Herlihy,
Special Commissioner.
Order of Commission on Height of Buildings in the City of Boston Amending Boundaries Established November 2, 1916.
[Order of January 12, 1917.]
Whereas, The undersigned, the Commission on Height of Buildings in the City of Boston, created by chapter 333 of the Special Acts of the year 1915, a commission to determine and revise the boundaries of Districts A and B in said city, which were established in pursuance of the provisions of chapter 333 of the Acts of the year 1904, did on November 2, 1916, make an order in accordance with the provisions of said chapter 333 of the Special Acts of the year 1915, which order is recorded with Suffolk Deeds, Book 3993, page 81; and
Whereas, Certain parties are aggrieved by said order of November 2,1916, and have in pursuance of the provisions of said chapter 333 of the Special Acts of the year 1915 duly filed petitions for the revision of said order;
Now, therefore, We the undersigned, having considered the matters set forth in said petitions, do hereby revise said order of November 2, 1916, in the manner following:
By excluding from District A as described in clause three of said order of November 2, 1916, and including in District B as described therein, the tract of land described as follows:
Beginning at a point on Boylston street at the division line between the Hotel Brunswick and the estate numbered 504 Boylston street; thence running southerly by said dividing line to Providence street; thence running westerly along Providence street to the dividing line between the estates now numbered 91 and 93 St. James avenue extended northerly; thence running southerly by said dividing line to St. James avenue; thence running westerly along St. James avenue crossing Dartmouth street and Huntington avenue and continuing westerly along Blagden street to the easterly line of the property of the Boston Athletic Association; thence running northerly by said last mentioned line and by said line extended parallel with Exeter street northerly to Boylston street; thence running easterly along Boylston street to the point of beginning.
The above described area shall be included wholly within District B and no part of said area shall be included in District A by reason of the following provision in said order of November 2, 1916:
"Wherever the boundary line of District A is described as following a certain street, the same is intended to include all property on that side of the street which lies within the described area, and also that portion of all lots on the opposite side of the street, abutting on the street, but extending to a depth of not more than one hundred and fifty feet.
"Wherever the boundary line of District B is determined by the enumeration of certain streets delimiting District A, the same is intended to include all property on that side of the street within the described area, except that portion of those lots abutting on the boundary streets of District A, but extending to a depth of not more than one hundred and fifty feet, which are described in the paragraph above as intended to form a part of District A."
 
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