I have an old Manchester United Fixtures Card, from some time between the 1920's to 1930's, but I'm not sure when. The card doesn't have a year printed on it, are there any websites with such information on?

The card starts with:

Aug 28 - Liverpool - Away
Aug 30 - Sheffield United - Away
Sep 04 - Leeds United - Away
Sep 11 - Newcastle United - Away

It's up for sale if anyone's interested?

My Sheffield United history book points out that the season in which they played Manchester United, at home, on August 30th, was .. 1926/27.

Heyesey is correct check here

http://www.statto.com/teams/results.php?id=572&yr=56

For Manchester United, the 1926/27 season looks to be a rather forgettable one. Just imagine how the Old Trafford faithful would react at a repeat of that season.

For Manchester United, the 1926/27 season looks to be a rather forgettable one. Just imagine how the Old Trafford faithful would react at a repeat of that season.
As a SPURS fan I would swap them their first dozen results:D:D

Superb, thanks guys!