You can buy heirloom maps that gives the full map and all flight paths for each expansion. : r/wow
Orgrimmar Heirloom Vendors - General Discussion - World of Warcraft Forums
Mists of Pandaria Timewalking Event Guide
Guide to Monk Heirlooms: Mists of Pandaria | MonkSpecs
Apparantly there is an heirloom vendor on top of Orgrimmar ramparts : r/wow
Krom Stoutarm - NPC - World of Warcraft
9.1.5 Heirlooms Guide | World of Warcraft GamePlay Guides
Heirloom - Wowpedia - Your wiki guide to the World of Warcraft
Where is Heirloom Vendor for Horde Faction - WoW Shadowlands - YouTube
Heirloom Collections Guide - Wowhead
Horde Heirloom Vendors - WoW Legion - YouTube
Heirlooms in Dragonflight - Grahran's WoW Gold
Where is Heirloom Vendor for Alliance Faction - WoW Shadowlands - YouTube
Where is Alliance Heirloom Vendor WoW - YouTube
Heirloom vendor and UC Quartermaster has been moved to top of Orgrimmar Gates : r/wow
9.1.5 Heirlooms Guide | World of Warcraft GamePlay Guides
Starter Capital: Cocoa Beans
Heirloom Collections Guide - Wowhead
Ten Ton Hammer | WoW Heirloom Items
WoW 5.4 Where to buy heirlooms (horde) - YouTube
How to acquire Wrath (level 80) heirloom items in WoW | Welcome to Spinksville!
Heirloom Gear Guide - World of Warcraft Dragonflight - Warcraft Tavern
Mistweaver Xia - Wowpedia - Your wiki guide to the World of Warcraft
