capitalization: U.S. government, U.S. Department of the Interior, U.S. exports, the U.S. Army write out “United States” when it is the noun, but not when it is an adjective; do not place a space between U. and S.

do not capitalize season, or state as “summer of 1969”

222 Packard St.
capitalize and abbreviate street, avenue, boulevard, etc., but not short items such as road or lane, when the number prefaces the street name

Sam lived on Packard Street.
write out and capitalize street when no number is given

It is at the intersection of Packard and Mills streets.
when two proper names (also true of companies, rivers, etc.) are listed, do not capitalize street

The houses surveyed are No. 15 and No. 27 Mill Street.
The deed cites lot No. 146.
“number(s)” is always capitalized and abbreviated as No. or Nos.
(Also: LaSalle, Illinois, is a No. 1 town.)

Interstate 66 , U.S. 30 or Route 30
write out and capitalize “interstate” on first reference.
Subsequent references are abbreviated, i.e., I-66

acronyms: write out the complete name on first reference, putting the proper name’s acronym in parentheses afterward; thereafter use the acronym only:

For example: The U.S. Department of Agriculture (USDA) and Society of Architectural Historians (SAH) have an agreement to study historic barns in the United States, but the SAH is unsure of the USDA’s commitment.

Style

Detailed list of Style vs. style

Capitalization of style

Palladian-style, . . . a Mission-style roofline

append “-style” to an established architectural term if your subject is reminiscent of the original but not an example of the actual model; this is not to be confused with proper names such as International Style, which take capital letters and would not be hyphenated

Style Incorrectly Capitalized

Style Correctly Capitalized