The wagon photo above, donated by my cousin Bertha Ramos Warner, shows seven persons.  There is an unidentified signature or inscription at the top left corner.  The time frame is the mid to late 1920's judging from the automobile in the background.  Of the two ladies in front of the wagon, the lady on the right is Maria del Pilar and an with her is an unidentified relative.  In the wagon seated low is an unknown woman but the woman seated above in dark clothing is Eulalia, also known as "Mama Lala."  Driving the wagon is Jesus Maria Garcia or "Papa Jesus."  To his right and facing the camera is our grandfather, Medardo Garza and that may be his gunbelt or other implement on his shoulder.  The man with his back to the camera remains unidentified. 
To the left is one of the wedding photos of Medardo and Maria del Pilar taken in 1920.  This is one of four poses that are known.  Above and to the right are the couple again taken from a larger photo of the Garza family at a the wedding of Medardo's sister Eva in mid 1920's. 

More to come.  Please feel free to contribute your comments, more information and more photos.  God Bless you all. 
Papa Jesus in his later years and seated on the sofa are from left to right were Tia Maria Garcia Salinas, Tio Anastacio "Tacho" Garcia, Maria Del Pilar Garcia Garza, my grandmother, and Tio Anastacio's wife, Tia Sara Garcia.  These photos courtesy of Bertha Ramos Warner.