The tables below have the 1964-65 number blocks for each state.
The type of plate was determined by the colors - refer to my Numbering and Colors page for details.

The information comes from the document 'Diario Oficial' published by the government of Mexico.
The issue dated 24 October 1963 contains the table with the license plate number blocks.

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ALL VEHICLES   1964-65
State	Numbers Assigned
DISTRITO FEDERAL	1 - 99-99-99
AGUASCALIENTES	A10-01 - A4-00-00
BAJA CALIFORNIA	B10-01 - B9-99-99
BAJA CALIFORNIA SUR	10-01 - 4-00-00
CAMPECHE	10-01 - 3-00-00
CHIAPAS	10-01 - 4-00-00
CHIHUAHUA	U10-01 - U9-99-99
COAHUILA	C10-01 - C9-99-99
COLIMA	10-01 - 2-00-00
DURANGO	D10-01 - D9-99-99
GUANAJUATO	G10-01 - G6-00-00
GUERRERO	10-01 - 5-00-00
HIDALGO	H10-01 - H6-00-00
JALISCO	J10-01 - J9-99-99
MEXICO	M10-01 - M9-99-99
MICHOACAN	10-01 - 5-00-00
MORELOS	10-01 - 5-00-00
NAYARIT	N10-01 - N5-00-00
NUEVO LEON	10-01 - 9-99-99
OAXACA	10-01 - 5-00-00
PUEBLA	P10-01 - P9-99-99
QUERETARO	Q10-01 - Q6-00-00
QUINTANA ROO	10-01 - 2-00-00
SAN LUIS POTOSI	10-01 - 6-00-00
SINALOA	S10-01 - S9-99-99
SONORA	10-01 - 9-99-99
TABASCO	10-01 - 3-00-00
TAMAULIPAS	T10-01 - T9-99-99
TLAXCALA	10-01 - 6-00-00
VERACRUZ	V10-01 - V9-99-99
YUCATAN	Y10-01 - Y6-00-00
ZACATECAS	Z10-01 - Z7-00-00