3 layers mapbox

<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <title>Show and hide layers</title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.css' rel='stylesheet' />
    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>
<body>

#menu a {
        font-size: 13px;
        color: #404040;
        display: block;
        margin: 0;
        padding: 0;
        padding: 10px;
        text-decoration: none;
        border-bottom: 1px solid rgba(0,0,0,0.25);
        text-align: center;
    }

#menu a:last-child {
        border: none;
    }

#menu a:hover {
        background-color: #f8f8f8;
        color: #404040;
    }

#menu a.active {
        background-color: #3887be;
        color: #ffffff;
    }

#menu a.active:hover {
        background: #3074a4;
    }
</style>

});
   });
  map.on('load', function () {
    map.addSource('39GreenBook-71q26f', {
        type: 'vector',
        url: 'mapbox://andy-rutkowski.4g09jqj8'
    });
    map.addLayer({
        'id': '39GreenBook',
        'type': 'circle',
        'source': '39GreenBook-71q26f',
        'layout': {
            'visibility': 'visible'
        },
        'paint': {
            'circle-radius': 5,
            'circle-color': 'rgba(55,148,179,1)'
        },
        'source-layer': '39GreenBook-71q26f'
  
    });
 });
var toggleableLayerIds = [ '39GreenBook','HOLC'];

for (var i = 0; i < toggleableLayerIds.length; i++) {
    var id = toggleableLayerIds[i];

var link = document.createElement('a');
    link.href = '#';
    link.className = 'active';
    link.textContent = id;

link.onclick = function (e) {
        var clickedLayer = this.textContent;
        e.preventDefault();
        e.stopPropagation();

var visibility = map.getLayoutProperty(clickedLayer, 'visibility');

if (visibility === 'visible') {
            map.setLayoutProperty(clickedLayer, 'visibility', 'none');
            this.className = '';
        } else {
            this.className = 'active';
            map.setLayoutProperty(clickedLayer, 'visibility', 'visible');
        }
    };

var layers = document.getElementById('menu');
    layers.appendChild(link);
  }

</script>

</body>
</html>

https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.js