Hal,
In addition to the 10811 variants in that list, there are the 00105 variants like the 00105-6013. These were used in the early versions of the HP 5065A, HP 5061A, HP 5360A, HP 105A, and the "M" versions of the HP 5245 and HP 5248 counters. Also the 10544, 10544A, and 10543 were used. All of these are considered high stability. HP also used a lot of other crystal oscillators made by various venders but they for the most part were not considered high stability. The 10811 was retrofitted into the 5061A, 5065A, and 105A as the original 00105 variants failed and were out of production. You also saw a lot of 10544 and 10544 clones installed in the 5345 and 5248 (both L and M versions) as their original oscillators died. The 5345A and 5370A/B and most of that eras counters used the 10811. The HP 5071A uses a modified 10811.
Cheers,
Corby