Photograph of Adolfo Mateos standing at a podium under a canopy and addressing members of the press. Behind this group lies a river and trees.

Photograph of Adolfo Mateos strumming a guitar while sitting at an outdoor picnic table. He is sitting with a group of people that includes Harry S. Truman (left), Sam Rayburn (left, sitting behind a seated woman), Lyndon Johnson (obscured behind Mateos), and Lady Bird Johnson (seated right). The picnic table is topped with glasses, tea cups, and a pair of sunglasses.

Photograph of people outdoors at a picnic table covered with food, drinks, and a cowboy hat. Two women (one of whom has a purse) sit to the left. Harry S. Truman turns to look at a man wearing a cowboy hat and holding a guitar. Sam Rayburn has his arm around a woman and looks toward Truman. Another woman sits to the right. Lyndon Johnson is standing over Truman.

Photograph of a dirt pathway lined with Mexican flags on the left and United States flags on the right. A man and woman walk down the path together towards trees. On the right, a wire fence runs parallel to the road, with buildings visible beyond.

Photograph of Lyndon Johnson walking with Adolfo Mateos in front of a group of people. A woman wearing a sombrero and traditional Mexican dress is behind the pair.

Photograph of Lyndon Johnson and Adolfo Mateos walking together within a group of people. Two people can be seen playing guitars behind them.

Photograph of Lyndon Johnson and others standing underneath a Mexican flag. The LBJ Ranch House is visible to the left.

Photograph of Lyndon Johnson walking arm in arm with Adolfo Mateos while a group of people following behind them. Two mariachi band members hold guitars walk behind Johnson to the right.

Photograph of a man standing at a lectern and speaking in front of people, some of whom have cameras.

Photograph of a man standing at a podium during Adolfo Mateos' visit to the LBJ Ranch. Sam Rayburn rubs his nose next to Mateos to the left.

Photograph of a Mexican flag flying over the LBJ Ranch. A procession of people dressed in suits and Mexican folk costumes walk under the flag. A man in the bottom left corner of the photo is taking pictures of the group.

Photograph of people standing under a Mexican flag flying from a pole on the LBJ Ranch.

Photograph of the Johnson Family Cemetery. Stone walls surround the site, and tombstones are visible underneath oak trees.

Photograph of the Johnson Family Cemetery. Stone walls surround the site, and tombstones are visible underneath oak trees.

Photograph of Watt Matthews holding a branding iron to a fire in a paint bucket. More branding irons are sticking into a crumpled oil drum to his right. To his left, two cowboys stand around the rear of a pickup truck.

Photograph of a group of cowboys and a young boy around a blue truck near cattle pens.

Photograph of a group of cowboys around a blue truck in a ranch yard. Two men holding plates lean on the left side of the vehicle near an open door. Another man with a plate approaches the open and cluttered bed of the truck. Three men are leaning on the right side of the truck, and another man is partially visible in front of the vehicle. A wooden fence separates this grass area from a herd of cattle in the background.

Photograph of cowboys branding a calf. A group of cowboys, many of whom are wearing leather chaps, are standing around a table topped with a restrained calf. Five men hover around the calf to the left of a green truck, while two men stand to the left near some branding irons. In the background, men are leading calves through a fenced chute that opens out to the table. Behind them, cattle are standing in a pasture with bare trees.

Photograph of a group of cowboys gathered around a calf that is being held on a table. In front of the group sits a barrel and branding irons. To the left of the group, men are visible in a cattle chute. Behind them, a green truck sits in front of a wooden fence, beyond which a herd of cattle is stand in a pasture. A lone horse is visible among the cattle in the top left quadrant of the photo.

Photograph of cowboys having a meal in a fenced area. Men sit against a fence to the left near a damaged barrel. One man takes a sip from a cup, while a black man at the end holds a plate and cup. Another group is sitting on the grass in the center, with a child standing near a man nearby. Two older men in more formal attire stand to the right of the group and behind a woodpile.

Photograph of a group of cowboys holding down a calf. A puff of smoke stands between this group and a man to the left who is next to branding irons. To the right, a man stands slightly away from the group looking at an object in his hands. A green truck is partially off camera further to the right. Behind the group, men can be seen leading calves through a wooden cattle chute. Cattle stand in a fenced pasture behind the cowboys.

Photograph of cowboys restraining a calf for a branding. A group of cowboys, many of whom are wearing leather chaps, are standing around a table topped with a restrained calf. Men hover around the calf to the left of a green truck, while two men stand to the left near some branding irons. A man in chaps to the left bends over and grabs some branding irons. In the background, men are leading calves through a fenced chute that opens out to the table. Behind them, cattle are standing in a pasture with bare trees.

Photograph of four women standing in front of a white truck. The woman to the left has silver hair, a blue dress, and has her arms crossed over a red cloth. To the right, a brown haired woman in a collared white shirt, black cardigan, and plaid skirt has her face obscured by the hat of a woman to the right. The next woman to the right is leaning over with her arms crossed and is wearing a straw hat, glasses, and a pink shirt. A dark haired woman stands to the right of the photo in a light green shirt. The group is standing on a ranch field.

Photograph of people gathered in a field with fenced off cattle in the background. Some men and women are gathered around a blue truck to the left. A horse is partially visible behind them. Another group of men stands together to the right of the other group. A small child walks to the right of the photo.