A Hallmark birthday card sent to John J. Herrera from his son, Douglas M. Herrera. The front of the card is an image of a man fishing in a stream and the interior contains printed birthday poem. The card also includes a handwritten message concerning the death of Dr. King and Douglas' belief "The prospects for peace are now the best that have existed in a great while and was all hope that this war will be settled soon."

Draft of speech by John J. Herrera delivered at the San Jacinto celebration on April 20, 1968. Herrera was there as a representative of the League of United Latin American Citizens and placed a wreath on the monument on their behalf.

Envelope addressed to John J. Herrera, mailed from Guadalajara by Alberto Garibi Harper, Jr.

Letter from Albert B. Herrera to John J. Herrera requesting John's help in getting appointed to a Postmaster position. The letter is signed B. B., Juanita, and Albert Jr.

Letter from Barefoot Sanders, Legislative Counsel to the President, to Congressman Bob Casey, dated October 1, 1968. Sanders writes that the White House will consider Judge Alfred J. Hernandez for an ambassador post.

Letter from Congressman Bob Casey to John J. Herrera, dated October 2, 1968, accompanying a letter Casey had received from the Legislative Counsel regarding Judge Alfred J. Hernandez.

Letter to Mr. and Mrs. John J. Herrera from their son, Douglas M. Herrera, dated October 13, 1968. Douglas describes watching the Olympic Games in Mexico, and his plans to move to a different apartment near the Mexican university he is attending. The letter switches from Spanish to English. Douglas explains, “I guess I’ve murdered the family tongue enough for one letter so I’ll revert to a bit of jolly ole English.”

Letter from Henry B. Gonzalez to John J. Herrera, dated May 13, 1968. Gonzalez thanks Herrera for writing a letter supporting his efforts in Washington.

Letter from J. P. Kennedy from the University of Texas at Houston Dental Branch, to John J. Herrera, renewing Herrera's acquaintance through a newspaper photograph, which he has enclosed with his letter. Kennedy also asks Herrera to watch a program on Channel 8 at 8:30 p.m. on November 19, 1968.

Letter from Jim Wright, 12th District, Texas, to Richard Bela, President, LULAC Council, 11041, Washington D.C., regarding the civil rights bill.

Letter from Governor John B. Connally to John J. Herrera thanking Herrera for his kind thoughts. Connally states that he will not issue a certificate to make Patricia J. Collins an Honorary Texas Citizen as she was "evidently a true Texan now."

Letter from John J. Herrera replying to Alberto Garibi Harper, Jr., stating his willingness to work more closely together whenever Herrera has business Guadalajara.

Letter from John J. Herrera to Alfred J. Hernandez accompanying a number of letters being forwarded to Hernandez.

Onionskin paper carbon copy of letter from John J. Herrera to J. B. Casas, informing Casas that Herrera will be in Santa Monica for the coming SER Board of Directors meeting on January 12, 1968. Herrera asks Casas to inform his friend Wilie Aguayo that Herrera hopes to spend the weekend with them.

Onionskin paper carbon copy of letter from John J. Herrera to Jerry Hale reminding Hale of his child support obligations to his ex-wife, with which he is tardy.

Onionskin paper carbon copy of letter from John J. Herrera following up on the retrieval of a gun he had forgotten in the room at the El Gardin Hotel in Brownsville in November, 1967.

Onionskin paper carbon copy of letter from John J. Herrera to Tony Silba advising Silba on his position of owing a gambling debt and suggesting that in the future he not sign any checks that would indicate his acknowledgement of a debt.

Letter from John P. Lagomarcino, Attorney, Department of Health, Education and Welfare, Office of the Secretary, Washington D.C., to John J. Herrera, enclosing copies of the pleadings for the case of Delgado, et al vs. Bastrop Independent School District, et al. received by him on April 15, 1968.

Letter from John P. Lagomarcino, Attorney, Department of Health, Education and Welfare, Office of the Secretary, Washington D.C., to John J. Herrera, enclosing copies of the pleadings for the case of Delgado, et al vs. Bastrop Independent School District, et al. received by him on April 15, 1968.

Letter to John J. Herrera from a public notary, Mario Garza Ramos, in Matamoros in Mexico, formally giving Herrera authority on behalf of Ana García de Barguiarena and Roberto Barguirena Menchaca with regards to a 1968 Volkswagen car with Mexican registration for their younger son, Roberto Barguiarena García.

Letter from Roberto Ornelas to John J. Herrera on February 5, 1968, thanking Herrera for his service as a board member of Jobs for Progress, Incorporated.

Letter from Shearn Smith thanking John J. Herrera for his help garnering public support to get Smith re-elected as Judge of the 61st Court.

Handwritten letter from Tony Silba to John J. Herrera, seeking legal advice regarding interest charged on an unpaid grocery bill, 1968.

Letter from Tony Silba, of Moulton, Texas, to John J. Herrera. Silba writes to Herrera inquiring about the legality of paying gambling debts with a check to a man named Jimmie Strys, from Flatonia, Texas.