Most of these are standard Taxi issues, but if no state issue exists, I'll also accept the smaller sized supplemental and city/county issue plates (like the Minnesota type).

Have one not pictured you'd like to sell?  Email me! - Drewski - Drew@PL8S.com

Yukon Territory - "L", Livery

Alabama - "X3" series for Taxis

Alaska - full FOR HIRE legend

NEED

ARIZONA

Arkansas - full FOR HIRE legend

California - full LIVERY legend

NEED

COLORADO

Connecticut - full TAXI legend

Delaware - full TAXI legend

District of Columbia - "H" - Hire series

Florida "E" series - FOR HIRE vehicles

NEED

GEORGIA

NEED

HAWAII

NEED

IDAHO

Illinois - full TAXI legend

NEED

INDIANA

No state issue, town issues are known.

Kansas - KCC - Kansas Corporation Committee

Kentucky - small TAXI series

Louisiana - full HIRE TAXI legend

Maine - full HIRE legend

Maryland - full HIRE legend

Massachusetts - full TAXI legend

Michigan - City series from Wayne - 2005

Minnesota - Mankato town series, 1974

NEED

MISSOURI

NEED

MONTANA

Nebraska - full TAXI legend

Nevada - small series TX prefix

No standardized state issue - town issues exist

New Jersey - full OMNIBUS legend series

New Mexico - TX series prefix

New York - Taxi and Livery Commission

North Carolina - T prefix taxi series

NEED

NORTH DAKOTA

Ohio - Toledo city series

Oklahoma - Full TAXI CAB legend

NEED

OREGON

Pennsylvania - full TAXI legend

Rhode Island - 1953/54 full TAXI legend

South Carolina - full TAXI legend

NEED

SOUTH DAKOTA

Tennessee - full TAXI CAB legend

Texas - Houston City series, 1975

Undated black/refl white; "UTAH 73" bottom; AA 0000 format; steel & aluminum - taxis have "LA" thru "WW" prefixes

NEED

VERMONT

Virginia - "H" Hire

NEED

WASHINGTON

West Virginia - "J" series, Jitney-Taxi

Taxi - graphic farm base; "ZZ"A-000 serial format, reserved series

NEED

WYOMING

Alberta - "L" series, Livery

British Columbia, Victoria City Cab - 1950

Manitoba - full legend TAXI

New Brunswick - full legend TAXI

Newfoundland - TX_ prefix, Taxi series

Nova Scotia - Yamouth City issue, 1955

NEED

NUNAVUT

Ontario - Stoney Creek City issue

NEED

PRINCE EDWARD IS

Quebec - T series (Taxi)

Saskatchewan - UL, Livery series. Yukon Territory - "L" series (Livery)

NEED

Puerto Rico

Guam

American Samoa - T series, Taxi

Virgin Islands - St. Thomas