Below is a collection of textures which can be easily applied to photographs using Adobe Photoshop.
Simply download the texture image by clicking on the thumbnail below and save it to your computer (right click > Save Image As). Open the texture in Photoshop and 'drag' it over the photograph you want it applied to. This will create a new layer. Ensure the size of this layer matches the size of your photograph behind it. On the layers pallette, change the blending mode from 'Normal' to either Overlay, Color Dodge, Linear Dodge, Lighten or Darken. Different blending modes change the look of the texture so experiment with different options.