- Babbitt, George
- Babbitt, Gosney
- Baboquivari Cattle Company
- Baboquivari Peak
- Baden, Kay
- Baffert, Leon
- Bagg, Stanley
- Baier, Fred
- Bailey, Buster
- Baird, Frederic
- Baker, Albert
- Baker, Almeron J.
- Ball, Joseph H.
- Balthasar, Juan A.
- Bandel, Eugene
- Bandelier, Fanny
- Banta, Albert F.
- Barfield, Karl
- Barnes, William Croft
- Barney, James M.
- Barr, Remington F.
- Barrow, Charles A.
- Barrymore, Elsie
- Bartlett, John
- Baumann Mines
- Bayless, J.B.
- Beaham Family
- Beck, Arthur
- Becker, F. W.
- Becker Family
- Beeson, Hazel
- Behan, John
- Beiser, Frank D.
- Belden, Josiah
- Bellanger, Richard
- Beltran, Carmen C.
- Benedict, Albert
- Bennett, Clarence
- Benson, AZ Board of Trade
- Benson, John H.
- Bent Family
- Bentley, Evalyn A.
- Benton, Jesse
- Bentz, Donald M.
- Bernard, Theos
- Bernard, Theos Casimir
- Berrell, George
- Bethune, Joseph
- Big Brothers of Tucson
- Bigglestone, William
- Bilby, Ralph W.
- Biography Files (Tempe)
- Birchett, John S.
- Bishop, Thomas S.
- Black Diamond Mines
- Blacklidge Family
- Blair, Robert
- Blake, William
- Bledsoe, Nelson
- Blue Rock Gun Club
- Bogan, Phoebe
- Bond, Marshall
- Botkin, Freda
- Bourne, Eulalia
- Bowyer, S.
- Bowman, Ralph
- Box, Wiley
- Boyer, Glenn
- Boyle, William H.
- Boys’ Clubs of Phoenix
- Brady, Peter R.
- Brandes, Raymond
- Brandes School
- Breathitt, John
- Bret Harte, John
- Brichta, Augustus
- Briggs, Lloyd
- Brimhall, Edna Lee
- Brinegar, David
- Brinegar, Thomas
- Brinegar-Bethancourt Persian Gulf Collection
- Broadsides Collection
- Brockman, Lott
- Brodie, Alexander O.
- Brophy Family
- Brotherhood of Railway Trainmen, Dewey Lodge
- Brown, A. L.
- Brown, Estelle
- Brown, George A.
- Brown, Herbert
- Brown, James K.
- Brown, Lorenzo
- Brown, Olive
- Brown, Rollin C.
- Browning, Harrison
- Buchholz, Maud
- Buckalew, Oscar
- Buehman Family
- Buehman & Roskruge
- Buffalo Soldiers Museum
- Bunker Hill Mine
- Burch, Dean
- Burgess, John D.
- Burkhart, Dorothy
- Burmister, Robert
- Burr, Rollin
- Burrell, Encarnacion “Chonita” Sweeney
- Burruel Family
- Burrus, Ernest
- Busenbark, Annie
- Bushman, John
- Business Journals & Account Books
- Buttner, Adolph George
- Byerly, Frank A.
- Byers, Billy
