|Stamps of Upper Senegal and Niger overprinted in black or red|
|1 centime violet and grey-purple||1||1|
|other values 2c to 5 francs||2-28||2-26 †|
† Scott  runs the issues from 1920 until 1928 in one listing ordered by denomination. Gibbons  lists the 1920-21 issues first and then 1922-28. Thus, the catalogue numbers match for only the first 4 stamps.
The summary in Scott  is admirably concise,
“In 1919 the French territory of Upper Volta was detached from the southern section of Upper Senegal and Niger and made a separate colony. In 1933 the colony was divided among its neighbors: French Sudan, Ivory Coast, and Niger Territory. The Republic of Upper Volta was proclaimed December 11, 1958; the name was changed to Burkina Faso on August 4, 1984.”
Gibbons  adds that the stamps of French West Africa were used from 1947 until 1959.