From Valero's record, 1955 Ring Record Book.

From Excelsior, Mexico City (Bob Yalen).

From The Ring, December 1947, page 47.

This fight is in the records of Valero and Chavez, and was reported in The Ring, but the round in which the fight ended is not mentioned in any of these sources.

From Mexican newspapers (Bob Yalen).

From Mexican newspapers (Bob Yalen).

From The Ring, June 1952, page 54.

From The Ring, January 1951, page 60.

From Mexican newspapers (Bob Yalen).

This was not a Mexican featherweight title fight even though Valero was the champion and both men were below the limit. The fight was not scheduled for the championship distance (12 rounds).

After four hard-fought and close rounds, Sosa took control. Valero had tired and took punishment in round five which finally caused him to take an 8-count at the end of the round. In the sixth round, Valero took another 8-count and then finally was put down for the full count.

This fight did not occur on March 1, 1950, as shown here previously.

From The Ring, February 1940, page 48. Valero "looked like a real champion, " and retained his featherweight title.

From The Ring, December 1947, page 37. Although Valero held both the bantamweight and featherweight titles of Mexico, neither was at stake because the fight was not scheduled for the title length (12 rounds).

Weights from Excelsior (Mexico City)

From Mexican newspapers (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

World Bantamweight Title
Valero said to have won 55 out of 57 previously. Weights from La Opinion (Los Angeles) July 8, 1948.

From El Siglo (Torreon), (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

From Mexican newspapers (Bob Yalen). This fight did not occur on June 26, as shown in Valero's record, Ring Record Book, various editions.

From Mexican newspapers (Bob Yalen).

From Mexican newspapers (Bob Yalen).

From Mexican newspapers (Bob Yalen).

From Excelsior Mexico City (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

From Mexican newspapers (Bob Yalen).

From Mexican newspapers (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen).

A scheduled fight according to Excelsior, Mexico City (Bob Yalen). The result is probably correct but needs to be verified.

From Excelsior, Mexico City (Bob Yalen).

From Excelsior, Mexico City (Bob Yalen). This was said to be Valero's first professional defeat, but he may have lost earlier to Chilindrina Valencia.

From Excelsior, Mexico City (Bob Yalen). Also, according to Yalen, Valencia had nine other early fights in Mexico City, the results not being available. These are: Conguito Flores, 10 June 1942; Miguel Barrera, 22 July 1942; Jose Gonzalez, 22 August 1942; Rafael Ortiz, 17 October 1942; Jorge Robles, 7 November 1942 and 16 January 1943; Porfirio Sosa, 19 December 1942; Lupe Rivera, 15 May 1943; and Cuco Ortiz, 31 July 1943.

From Excelsior, Mexico City (Bob Yalen). This was Valero's professional debut. He had held the Mexican Amateur Title in the bantamweight division.