after vivian passed away in july of 1989, the team wore black armbands on their left sleeves in tribute. here's a 1990 topps jim clancy card showing the memorial
the armband actually kind of blends in to the astros' uniforms. take a look at rafael ramirez's 1991 upper deck card
the armband looks like an extension of the uniform stripe. no armband, but a dodger stadium shot on the back of ramirez's card.
plaque was placed that reads 'vivian l. smith 1908 - 1989 she loved the astros'.