Our beer yeast chart shows comparisons of all the yeast companies we carry. It also shows the known or best guess brewery source. Best guesses have been marked with a (?). If not exact, these guesses are very close, and will work as substitutes.
All credit to David Taylor for compiling the information from the chart below. His working and live spreadsheet can be found at the following webstite: https://docs.google.com/spreadsheets/d/16XRUloO3WXqH9Ixsf5vx2DIKDmrEQJ36tLRBmmya7Jo/edit#gid=1846233287 . For more information, David cites his sources at the bottom of his spreadsheet.