In operation

. (Allegheny County, Pennsylvania)
101 Algoma Boulevard (Winnebago County, Wisconsin)
Italianate building with Gothic revival details, still in use on a daily basis
101 Rodeo Arena (Kay County, Oklahoma)
112 Drive-In (Washington County, Arkansas)
19 Drive-In Theater (Crawford County, Missouri)
1939 Route 66 Bridge (Rogers County, Oklahoma)
20th Century Motor Hotel (Los Angeles County, California)
301 Taylor Steam Plant (Cook County, Illinois)
Steam generating power plant
31 West Drive-In Theater (Simpson County, Kentucky)
35 East Wacker (Cook County, Illinois)
40-story 523-foot skyscraper.
40 Winks Motel (San Bernardino County, California)
411 Drive-In Theatre (Cherokee County, Alabama)
5th Avenue Theater (King County, Washington)
66 Diner (Bernalillo County, New Mexico)
66 Motel (Coconino County, Arizona)
66 Motel (San Bernardino County, California)
66 Motel (Navajo County, Arizona)
A-1 Diner (Kennebec County, Maine)
A. L. Pallmer Building (Hughes County, Oklahoma)
Aberdeen & Rockfish Railroad Business Office (Moore County, North Carolina)
HQ for local shortline railroad
Abraham Lincoln Presidential Library (Sangamon County, Illinois)
Academy Theater (Hennepin County, Minnesota)
Academy Theater (Crawford County, Pennsylvania)
Ace Cafe (Bernalillo County, New Mexico)
Ace-Hi Motel (Los Angeles County, California)
Acme Theater (Fremont County, Wyoming)
Adams Homestead Farm (Sagadahoc County, Maine)
Adluh Flour (Richland County, South Carolina)
A historic building still in operation
ADM Water Tower (Hamilton County, Tennessee)
Administration Building (Latimer County, Oklahoma)
Admiral Theater (King County, Washington)
Admiral Twin Drive-In (Tulsa County, Oklahoma)
Adobe Manor (Bernalillo County, New Mexico)
Aero Theater (Los Angeles County, California)
Afton High School (Ottawa County, Oklahoma)
One-story painted brick school building.
Aggie Theater (Larimer County, Colorado)
Agriculture Building (Ingham County, Michigan)
Academic Building on Michigan State University North Campus
Aiken Street Bridge (Middlesex County, Massachusetts)
Airlight Telephone Booth (Washington County, Arkansas)
Airlight Telephone Booth
AK Steel Zanesville Plant (Muskingum County, Ohio)
Alamo Stadium and Gymnasium (Bexar County, Texas)
Albert's Motel (Los Angeles County, California)
Albion River Bridge (Mendocino County, California)
Alcoa Wenatchee Works (Chelan County, Washington)
Aluminum smelter built in 1951
Alex Theatre (Madison County, Indiana)
Alexander Building (Bourbon County, Kansas)
Alki Point Lighthouse (King County, Washington)
37 foot tall lighthouse and fog signal building erected in 1913
Allegheny Tunnel (Cambria County, Pennsylvania)
Middle bore of three through Tunnel Hill, Gallitzin PA
Allen Theater (San Juan County, New Mexico)
Allen-Bradley Clock Tower (Milwaukee County, Wisconsin)
A tower that holds what was once the largest four-faced clock in the world.
Alpine Theater (Stevens County, Washington)
Alumni Hall (Allegheny County, Pennsylvania)
Amalgamated Sugar Company Nampa factory (Canyon County, Idaho)
Sugar Refining plant in Nampa Idaho
Ambassador Hotel (Milwaukee County, Wisconsin)
Art Deco luxury hotel with Egyptian Revival styling details
Ambler Theater (Montgomery County, Pennsylvania)
America Theater (Natrona County, Wyoming)
American Airlines Arena (Miami-Dade County, Florida)
Indoor arena in Miami Florida
American Dream Drive-In Theater (Park County, Wyoming)
American Legion Hall (Sumner County, Kansas)
American Legion Post #129 (Payne County, Oklahoma)
American Regency Inn (Coconino County, Arizona)
American Trust and Savings Bank (Dubuque County, Iowa)
12 Story Beaux-arts tower in downtown Dubuque
Americana Motel (Quay County, New Mexico)
Americana Motel (Bernalillo County, New Mexico)
Amherst Theater (Lorain County, Ohio)
Amtrak Station (Richland County, South Carolina)
Second Amtrak depot in Columbia
Amuzu Theater (Brunswick County, North Carolina)
Theater in Southport, NC
Anderson Ferry (Boone County, Kentucky)
Andria Theater (Douglas County, Minnesota)
Andy's Motel (San Bernardino County, California)
Angela Theater (Schuylkill County, Pennsylvania)
Ann's Chicken Fry House (Oklahoma County, Oklahoma)
Anoka Theater (Anoka County, Minnesota)
Antelope Mountain Lookout (Grant County, Oregon)
30' treated timber tower with R-6 flat cab, moved to this site in 1974
Anthony and Allison Sirna Studio (Barnstable County, Massachusetts)
Anthony Wayne Theater (Delaware County, Pennsylvania)
Antioch Baptist Church (Okfuskee County, Oklahoma)
Apalachia Hydroelectric Project (Cherokee County, North Carolina)
Apollo Theater (Bureau County, Illinois)
Apollo Theater (Elk County, Pennsylvania)
Apple Creek Dam (Cape Girardeau County, Missouri)
Arcadia Court (Mohave County, Arizona)
Arcadia Theater (Tioga County, Pennsylvania)
Arcadia Theater (Somerset County, Pennsylvania)
Arcadia Theatre (Wilson County, Texas)
Arena Theater (Mendocino County, California)
Arkley Center for the Performing Arts (Humboldt County, California)
Arlington Theater (Santa Barbara County, California)
Arlington Water Tower (Columbia County, Wisconsin)
Armco Gas Station (McKinley County, New Mexico)
Arrowhead Lodge (McKinley County, New Mexico)
Arrowhead Motel (Coconino County, Arizona)
Art Theater (Los Angeles County, California)
Artcraft Theatre (Johnson County, Indiana)
Arthur J. Dyer Observatory (Davidson County, Tennessee)
Aruba Motel (Quay County, New Mexico)
Ash Fork Bar & Brothel (Yavapai County, Arizona)
Assumption BVM Catholic Church (Brown County, Wisconsin)
Astro Budget Motel (San Bernardino County, California)
Astro Motel (Mohave County, Arizona)
Astro Motel (Los Angeles County, California)
Astro Motel (Navajo County, Arizona)
Astro Motel (San Bernardino County, California)
Astro Motel (Potter County, Texas)
Atchison County Courthouse (Atchison County, Missouri)
Athena Theatre (Athens County, Ohio)
Athens Theater (Craven County, North Carolina)
Athletic Club of Columbus (Franklin County, Ohio)
A private social and athletic club built in 1912
Atlantic Coast Line Passsenger Station (Florence County, South Carolina)
Old railroad depot now used as office space
Atlas Life Building (Tulsa County, Oklahoma)
Atoka County Courthouse (Atoka County, Oklahoma)
ATSF La Plata Depot (Macon County, Missouri)
Historic Amtrak Station
Attica Market & Main Historic District (Wyoming County, New York)
A commercial core of 23 buildings dating from 1827 to 1915
Attucks School (Craig County, Oklahoma)
Auburn-Garrett Drive-In Theatre (De Kalb County, Indiana)
Audrain County Courthouse (Audrain County, Missouri)
Aullville Tower (Lafayette County, Missouri)
ATT Long Lines Microwave Antenna Structure
Austin Ridge Lookout (Idaho County, Idaho)
Auto Vue Drive-In Theater (Stevens County, Washington)
Ava Family Theater (Douglas County, Missouri)
Avalon Restaurant (McKinley County, New Mexico)
Avalon Theater (Milwaukee County, Wisconsin)
First movie house in Milwaukee to be built for "talking" pictures
Avalon Theater (Mesa County, Colorado)
Avery Theatre (Siskiyou County, California)
Avilla Post Office (Jasper County, Missouri)
Avo Theater (San Diego County, California)
Avon Old Farms School (Hartford County, Connecticut)
A college-prep boarding school for boys grades 9-12
Aztec Motel (Yavapai County, Arizona)
Aztec Peak Lookout (Gila County, Arizona)
steel tower with flat roof steel 14' x 14' CL-100 cab
Aztlan Theater (Jefferson County, Colorado)
B Avenue Historic District (Linn County, Iowa)
B&O Railroad Potomac River Crossing (Jefferson County, West Virginia)
B.L. Sharpstein School (Walla Walla County, Washington)
Richardsonian Romanesque Revival schoolhouse built in 1898
Babcock Theater (Yellowstone County, Montana)
Badin Road Drive-In (Stanly County, North Carolina)
Bagdad Cafe (San Bernardino County, California)
Bailey County Courthouse (Bailey County, Texas)
Baker Boyer National Bank (Walla Walla County, Washington)
Seven story Neo-Classical/Greek Revival bank built in 1911
Baker High School Auditorium (East Baton Rouge Parish, Louisiana)
Baker Theatre (Caldwell County, Texas)
Balboa Theater (San Francisco County, California)
Balboa Theater (Orange County, California)
Baldridge Motor Court (Greene County, Missouri)
Ball, Hutchings and Co. Building (Galveston County, Texas)
Ballouville Bridge (Windham County, Connecticut)
Stone arch bridge of dressed stones in mortar in Killingly.
Baltimore Express Toll Lanes (Baltimore County, Maryland)
Tollway within a freeway in Baltimore, Maryland
Bangor Elevator (Van Buren County, Michigan)
Restored Grain Elevator Now a Public Venue/Rental Hall
Bank of Lafayette (Walker County, Georgia)
Bar-Ann Drive-In (Cambria County, Pennsylvania)
Barroll & Mahoney Building (Whitman County, Washington)
Two story brick bank building built in 1905
Barrow Civic Theatre (Venango County, Pennsylvania)
Barry County Courthouse (Barry County, Missouri)
Barstow Travelodge (San Bernardino County, California)
Basin Creek Cabin (Flathead County, Montana)
Bass Building (Garfield County, Oklahoma)
Battlefield Inn (Greene County, Missouri)
Baxter Springs Post Office (Cherokee County, Kansas)
Bay Theater (Ashland County, Wisconsin)
Art Moderne style theater still in operation
Bay Theater (San Luis Obispo County, California)
Baylor County Courthouse (Baylor County, Texas)
Bayouth's Lady Store Building (Creek County, Oklahoma)
Bayouth's Men's Store Building (Creek County, Oklahoma)
Bear Mountain Fire Lookout (Idaho County, Idaho)
1922 log cabin with 1951 L-4 tower
Bear Valley Lookout (Valley County, Idaho)
Beaumont Tower (Ingham County, Michigan)
Iconic Clock/Bell Tower on Michigan State University North Campus
Beckham County Abstract Co. (Beckham County, Oklahoma)
Becky's Drive-In Theater (Northampton County, Pennsylvania)
Beef Burger Barrel (Potter County, Texas)
BeeKay Theater (Kern County, California)
Beggs United Methodist Church (Okmulgee County, Oklahoma)
Bel Aire Motel (Coconino County, Arizona)
Belasco Theater (Los Angeles County, California)
Bell Building (Creek County, Oklahoma)
Bellevue Country Club (Onondaga County, New York)
Bellin Building (Brown County, Wisconsin)
Terra Cotta clad Chicago Style building, the "...first small skyscraper built north of Milwaukee."
Bellwood (Chesterfield County, Virginia)
Belvidere Water Tower (Boone County, Illinois)
Benchmark Work Center (Lewis and Clark County, Montana)
Benetka Road Covered Bridge (Ashtabula County, Ohio)
Benham Theatre (Harlan County, Kentucky)
Bennett's Auto (Coconino County, Arizona)
Bent Door Cafe (Oldham County, Texas)
Benton County Courthouse (Benton County, Missouri)
Berghoff Restaurant (Cook County, Illinois)
Berwick Theater (Columbia County, Pennsylvania)
Bessemer City Kings Mountain Drive-In (Gaston County, North Carolina)
Best Rest Inn (Sangamon County, Illinois)
Best Western Route 66 Rail Haven (Greene County, Missouri)
Bethel's Tourist Court (Coconino County, Arizona)
Bethpage Mission (Kearney County, Nebraska)
Bethune Junior-Senior High School (Caddo Parish, Louisiana)
Beverly Depot - Odell Park Historic District (Essex County, Massachusetts)
Big Lookout Mountain Lookout (Baker County, Oregon)
10' concrete base with wooden live-in cab