I believe they are called Burden Slings and have been used for thousands of years by indigenous women (and men!) all over the world and on every continent. The Native American women had them of course and were different and yet the same for every tribe and many from what I have seen so far looked the same from those used by African, Asian women and old European and Middle Eastern cultures. What differentiated them was the decoration, construct materials and details (bead work etc.). But since I am not creating Historically accurate images none of that is necessary since the slings I would need will be plain and un-decorated for the most part. I had dozens of older books on Native American cultures donated to the library I worked at that were incredibly detailed with old photos and drawings of such artifacts. The library didn't want them (something I could never figure out, libraries throwing out perfectly good and informative books) so, being responsible of eliminating unwanted books deemed so by the librarians, I took them out of the trash and kept them, donating them to a local dentist I know who has an incredible affection to Native American cultural artifacts His whole office has incredible museum quality display cases with outfits a accessories beautifully displayed. Instances like this make me wish I had kept them but having thousands of books already n wall to wall shelves in my room and around other rooms in my condo there was no sense in adding more the dust itself is choking me to death as is! Amazing what is NOT available on Google. When you do find a sweet tidbit it is scanned in and posted so damn small you can see no detail to work from. I noticed that even within each time period there were different designs for the slings, one cord, three cord, webbed, from the forehead, around the shoulders or chest and some even had waist cords securing it to the body better (sort of like a backpacks which were made from the same basic designs I would imagine). Anyway what I need is an actual set of slings. One from the forehead and one which wraps around the chest over the breasts and if possible one like a knapsack with straps around the shoulders and underarms and in that order of importance! :)