The Film Registry titles Lambchops (1929/1999) and The Beau Brummels (1928/2016) are both available as bonuses on the Warner Archive edition of The Jazz Singer (1927/1996), listed below.
Purchase the Warner Archive DVD from Amazon*
Purchase the Warner Archive Blu-ray Disc from Amazon* (The Jazz Singer itself is on Blu-ray Disc, the bonus discs are DVDs.)
*Note: Warner Archive discs are Manufacture-on-Demand (MOD) titles. As such they may take longer than usual to ship and are made on DVD-R and BD-R discs.
The Beau Brummels can also be seen on YouTube.
The Beau Brummels is or was available in various other editions and/or collections.